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Polaris SL750 Problems

 
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Chris10

External


Since: Jul 07, 2003
Posts: 3



(Msg. 1) Posted: Tue Jul 08, 2003 12:26 am
Post subject: Polaris SL750 Problems
Archived from groups: rec>sport>jetski (more info?)

My '95 Polaris SL750 is having problems running. It will start and run
fine, with full power and then just die or sputter out after about 30
seconds to 3 minutes. It will then be hard to start (10 to 15 tries) but
will start, idle poorly for about 15 seconds, improve for a bit and then
just die again. Fuel filter is clean, plugs are dry and slightly beige-
grey, new-gas, lots of oil.

I added some gas stabilizer/cleaner a week ago with no improvement and
took the airbox off a ran some carb cleaner through it this past weekend
with no improvement.

I did notice a small crack in the gas filler neck on the outside just
under the cap this past weekend but I religiously check the fuel/water
separator for contamination but there never seems to be more than a few
drops of water in it.

It has been doing this since I picked it up from my local marine dealer
in June who stores it for me over the winter. It ran fine on his hose he
said but has gotten progressivly worse in the last 3 weeks.

It's at the dealers shop right now and I don't want him to just start
throwing parts at it to see if that will resolve the problem. He's a
Yamaha dealer BTW so I can't expect him to be totally up on the Polaris
but they didn't make them that complicated back in '95.

Any ideas what it might be? All input would be welcome. I need to keep
this PWC running for at least 2 more years. <wink>

Chris

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Tom Howlin

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Since: Jun 21, 2003
Posts: 275



(Msg. 2) Posted: Tue Jul 08, 2003 12:26 am
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Chris,

The gas filler neck needs to be replaced immediately. It was a known
problem and the new filler/cap combination is made out of much tougher
material. I'd be real surprised if you didn't have water in the fuel
from the split. Also make sure the fuel vent line is working (it allows
air to enter the tank so it doesn't create a vacuum). I doubt that is
it because the split would probably allow enough air in on its own. The
other possible problem is a broken seal between the fuel pickup tube and
the top assembly where the lines connect. It starts sucking air instead
of gas and can't get enough to run the ski at full throttle. The only
easy way to fix it is to run the ski on a separate fuel supply with
gravity feed to the fuel petcock. Also, the fuel petcocks have been
known to fail or at least become partially blocked. Polaris played
around with what they called an "auto-cock" that was vacuum operated and
shut off the fuel flow when the engine wasn't running but I think it was
gone by 95.

Tom

Chris wrote:

 > My '95 Polaris SL750 is having problems running. It will start and run
 > fine, with full power and then just die or sputter out after about 30
 > seconds to 3 minutes. It will then be hard to start (10 to 15 tries) but
 > will start, idle poorly for about 15 seconds, improve for a bit and then
 > just die again. Fuel filter is clean, plugs are dry and slightly beige-
 > grey, new-gas, lots of oil.
 >
 > I added some gas stabilizer/cleaner a week ago with no improvement and
 > took the airbox off a ran some carb cleaner through it this past weekend
 > with no improvement.
 >
 > I did notice a small crack in the gas filler neck on the outside just
 > under the cap this past weekend but I religiously check the fuel/water
 > separator for contamination but there never seems to be more than a few
 > drops of water in it.
 >
 > It has been doing this since I picked it up from my local marine dealer
 > in June who stores it for me over the winter. It ran fine on his hose he
 > said but has gotten progressivly worse in the last 3 weeks.
 >
 > It's at the dealers shop right now and I don't want him to just start
 > throwing parts at it to see if that will resolve the problem. He's a
 > Yamaha dealer BTW so I can't expect him to be totally up on the Polaris
 > but they didn't make them that complicated back in '95.
 >
 > Any ideas what it might be? All input would be welcome. I need to keep
 > this PWC running for at least 2 more years. <wink>
 >
 > Chris<!-- ~MESSAGE_AFTER~ -->

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Dave Cates

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Since: Jun 25, 2003
Posts: 19



(Msg. 3) Posted: Tue Jul 08, 2003 12:26 am
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Could be air in the gas line since it seems to be hard to start after
running for a bit and sputters on the top. Plus you said there is a crack
in a line.

Dave



Chris wrote:

 > My '95 Polaris SL750 is having problems running. It will start and run
 > fine, with full power and then just die or sputter out after about 30
 > seconds to 3 minutes. It will then be hard to start (10 to 15 tries) but
 > will start, idle poorly for about 15 seconds, improve for a bit and then
 > just die again. Fuel filter is clean, plugs are dry and slightly beige-
 > grey, new-gas, lots of oil.
 >
 > I added some gas stabilizer/cleaner a week ago with no improvement and
 > took the airbox off a ran some carb cleaner through it this past weekend
 > with no improvement.
 >
 > I did notice a small crack in the gas filler neck on the outside just
 > under the cap this past weekend but I religiously check the fuel/water
 > separator for contamination but there never seems to be more than a few
 > drops of water in it.
 >
 > It has been doing this since I picked it up from my local marine dealer
 > in June who stores it for me over the winter. It ran fine on his hose he
 > said but has gotten progressivly worse in the last 3 weeks.
 >
 > It's at the dealers shop right now and I don't want him to just start
 > throwing parts at it to see if that will resolve the problem. He's a
 > Yamaha dealer BTW so I can't expect him to be totally up on the Polaris
 > but they didn't make them that complicated back in '95.
 >
 > Any ideas what it might be? All input would be welcome. I need to keep
 > this PWC running for at least 2 more years. <wink>
 >
 > Chris<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Polaris SL750 Problems 
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Wet Wolf1

External


Since: Jul 06, 2003
Posts: 8



(Msg. 4) Posted: Tue Jul 08, 2003 12:26 am
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

you guys forgot the most obvious answer -- fuel pump-- Those boats had a
dinky little fuel pump that was barely able to support a 650 motor, let alone
a 750. I'd bet a buk that its the oem pump and has never been rebuilt, and
even if it has, its still not enough. you have probably lean siezed a cyl. a
compression test will show that, so you are gonna have to rebuild the top end,
and while your at it, rebuild the fuel pump and get another one to boot and
hook em' both up, or just get a 780 fuel pump. Tom is right about checking the
other stuff, polaris did have problems in thosde years with the filler necks
and auto-cock (if it had it) and the rubber piece in the petcock can spin
around and shorten fuel supply, but most important is the extra pump volume


Bruce Wolford
Wet Wolf Tech
509-280-5444
<a style='text-decoration: underline;' href="http://www.wetwolf.com" target="_blank">http://www.wetwolf.com</a>

Tom Howlin wrote:

 > Chris,
 >
 > The gas filler neck needs to be replaced immediately. It was a known
 > problem and the new filler/cap combination is made out of much tougher
 > material. I'd be real surprised if you didn't have water in the fuel
 > from the split. Also make sure the fuel vent line is working (it allows
 > air to enter the tank so it doesn't create a vacuum). I doubt that is
 > it because the split would probably allow enough air in on its own. The
 > other possible problem is a broken seal between the fuel pickup tube and
 > the top assembly where the lines connect. It starts sucking air instead
 > of gas and can't get enough to run the ski at full throttle. The only
 > easy way to fix it is to run the ski on a separate fuel supply with
 > gravity feed to the fuel petcock. Also, the fuel petcocks have been
 > known to fail or at least become partially blocked. Polaris played
 > around with what they called an "auto-cock" that was vacuum operated and
 > shut off the fuel flow when the engine wasn't running but I think it was
 > gone by 95.
 >
 > Tom
 >
 > Chris wrote:
 >
  > > My '95 Polaris SL750 is having problems running. It will start and run
  > > fine, with full power and then just die or sputter out after about 30
  > > seconds to 3 minutes. It will then be hard to start (10 to 15 tries) but
  > > will start, idle poorly for about 15 seconds, improve for a bit and then
  > > just die again. Fuel filter is clean, plugs are dry and slightly beige-
  > > grey, new-gas, lots of oil.
  > >
  > > I added some gas stabilizer/cleaner a week ago with no improvement and
  > > took the airbox off a ran some carb cleaner through it this past weekend
  > > with no improvement.
  > >
  > > I did notice a small crack in the gas filler neck on the outside just
  > > under the cap this past weekend but I religiously check the fuel/water
  > > separator for contamination but there never seems to be more than a few
  > > drops of water in it.
  > >
  > > It has been doing this since I picked it up from my local marine dealer
  > > in June who stores it for me over the winter. It ran fine on his hose he
  > > said but has gotten progressivly worse in the last 3 weeks.
  > >
  > > It's at the dealers shop right now and I don't want him to just start
  > > throwing parts at it to see if that will resolve the problem. He's a
  > > Yamaha dealer BTW so I can't expect him to be totally up on the Polaris
  > > but they didn't make them that complicated back in '95.
  > >
  > > Any ideas what it might be? All input would be welcome. I need to keep
  > > this PWC running for at least 2 more years. <wink>
  > >
  > > Chris



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The Esquilax

External


Since: Jun 23, 2003
Posts: 20



(Msg. 5) Posted: Tue Jul 08, 2003 1:27 am
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

regrettably, it sounds as if you're seizing.

gummed carbs that weren't winterized will inadequately meter fuel,
causing a lean condition, and the dreaded squeak.

hopefully a carb clean and a new top end and off ou go....

greg



Dave Cates wrote:
 >
 > Could be air in the gas line since it seems to be hard to start after
 > running for a bit and sputters on the top. Plus you said there is a crack
 > in a line.
 >
 > Dave
 >
 > Chris wrote:
 >
  > > My '95 Polaris SL750 is having problems running. It will start and run
  > > fine, with full power and then just die or sputter out after about 30
  > > seconds to 3 minutes. It will then be hard to start (10 to 15 tries) but
  > > will start, idle poorly for about 15 seconds, improve for a bit and then
  > > just die again. Fuel filter is clean, plugs are dry and slightly beige-
  > > grey, new-gas, lots of oil.
  > >
  > > I added some gas stabilizer/cleaner a week ago with no improvement and
  > > took the airbox off a ran some carb cleaner through it this past weekend
  > > with no improvement.
  > >
  > > I did notice a small crack in the gas filler neck on the outside just
  > > under the cap this past weekend but I religiously check the fuel/water
  > > separator for contamination but there never seems to be more than a few
  > > drops of water in it.
  > >
  > > It has been doing this since I picked it up from my local marine dealer
  > > in June who stores it for me over the winter. It ran fine on his hose he
  > > said but has gotten progressivly worse in the last 3 weeks.
  > >
  > > It's at the dealers shop right now and I don't want him to just start
  > > throwing parts at it to see if that will resolve the problem. He's a
  > > Yamaha dealer BTW so I can't expect him to be totally up on the Polaris
  > > but they didn't make them that complicated back in '95.
  > >
  > > Any ideas what it might be? All input would be welcome. I need to keep
  > > this PWC running for at least 2 more years. <wink>
  > >
  > > Chris<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Polaris SL750 Problems 
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Wolf1

External


Since: Jul 07, 2003
Posts: 5



(Msg. 6) Posted: Tue Jul 08, 2003 2:04 am
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Did you change your fuel filter?............... my 2 cents
"Chris" <c_bonthronNO.TakeThisOut@SPAMyahoo.ca> wrote in message
news:20030707172616551-0400@nntp.uunet.ca...
 > My '95 Polaris SL750 is having problems running. It will start and run
 > fine, with full power and then just die or sputter out after about 30
 > seconds to 3 minutes. It will then be hard to start (10 to 15 tries) but
 > will start, idle poorly for about 15 seconds, improve for a bit and then
 > just die again. Fuel filter is clean, plugs are dry and slightly beige-
 > grey, new-gas, lots of oil.
 >
 > I added some gas stabilizer/cleaner a week ago with no improvement and
 > took the airbox off a ran some carb cleaner through it this past weekend
 > with no improvement.
 >
 > I did notice a small crack in the gas filler neck on the outside just
 > under the cap this past weekend but I religiously check the fuel/water
 > separator for contamination but there never seems to be more than a few
 > drops of water in it.
 >
 > It has been doing this since I picked it up from my local marine dealer
 > in June who stores it for me over the winter. It ran fine on his hose he
 > said but has gotten progressivly worse in the last 3 weeks.
 >
 > It's at the dealers shop right now and I don't want him to just start
 > throwing parts at it to see if that will resolve the problem. He's a
 > Yamaha dealer BTW so I can't expect him to be totally up on the Polaris
 > but they didn't make them that complicated back in '95.
 >
 > Any ideas what it might be? All input would be welcome. I need to keep
 > this PWC running for at least 2 more years. <wink>
 >
 > Chris<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Polaris SL750 Problems 
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Wolf1

External


Since: Jul 07, 2003
Posts: 5



(Msg. 7) Posted: Tue Jul 08, 2003 6:51 am
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Is there not a way to move the fuel pump to the center of the cyl's to
correct this leaning of # 3


"Wet Wolf" <wetwolf.RemoveThis@icehouse.net> wrote in message
news:3F0A23FD.DDF40D22@icehouse.net...
 > you guys forgot the most obvious answer -- fuel pump-- Those boats had
a
 > dinky little fuel pump that was barely able to support a 650 motor, let
alone
 > a 750. I'd bet a buk that its the oem pump and has never been rebuilt, and
 > even if it has, its still not enough. you have probably lean siezed a cyl.
a
 > compression test will show that, so you are gonna have to rebuild the top
end,
 > and while your at it, rebuild the fuel pump and get another one to boot
and
 > hook em' both up, or just get a 780 fuel pump. Tom is right about checking
the
 > other stuff, polaris did have problems in thosde years with the filler
necks
 > and auto-cock (if it had it) and the rubber piece in the petcock can spin
 > around and shorten fuel supply, but most important is the extra pump
volume
 >
 >
 > Bruce Wolford
 > Wet Wolf Tech
 > 509-280-5444
<font color=purple> > <a style='text-decoration: underline;' href="http://www.wetwolf.com</font" target="_blank">http://www.wetwolf.com</font</a>>
 >
 > Tom Howlin wrote:
 >
  > > Chris,
  > >
  > > The gas filler neck needs to be replaced immediately. It was a known
  > > problem and the new filler/cap combination is made out of much tougher
  > > material. I'd be real surprised if you didn't have water in the fuel
  > > from the split. Also make sure the fuel vent line is working (it allows
  > > air to enter the tank so it doesn't create a vacuum). I doubt that is
  > > it because the split would probably allow enough air in on its own. The
  > > other possible problem is a broken seal between the fuel pickup tube and
  > > the top assembly where the lines connect. It starts sucking air instead
  > > of gas and can't get enough to run the ski at full throttle. The only
  > > easy way to fix it is to run the ski on a separate fuel supply with
  > > gravity feed to the fuel petcock. Also, the fuel petcocks have been
  > > known to fail or at least become partially blocked. Polaris played
  > > around with what they called an "auto-cock" that was vacuum operated and
  > > shut off the fuel flow when the engine wasn't running but I think it was
  > > gone by 95.
  > >
  > > Tom
  > >
  > > Chris wrote:
  > >
   > > > My '95 Polaris SL750 is having problems running. It will start and run
   > > > fine, with full power and then just die or sputter out after about 30
   > > > seconds to 3 minutes. It will then be hard to start (10 to 15 tries)
but
   > > > will start, idle poorly for about 15 seconds, improve for a bit and
then
   > > > just die again. Fuel filter is clean, plugs are dry and slightly
beige-
   > > > grey, new-gas, lots of oil.
   > > >
   > > > I added some gas stabilizer/cleaner a week ago with no improvement and
   > > > took the airbox off a ran some carb cleaner through it this past
weekend
   > > > with no improvement.
   > > >
   > > > I did notice a small crack in the gas filler neck on the outside just
   > > > under the cap this past weekend but I religiously check the fuel/water
   > > > separator for contamination but there never seems to be more than a
few
   > > > drops of water in it.
   > > >
   > > > It has been doing this since I picked it up from my local marine
dealer
   > > > in June who stores it for me over the winter. It ran fine on his hose
he
   > > > said but has gotten progressivly worse in the last 3 weeks.
   > > >
   > > > It's at the dealers shop right now and I don't want him to just start
   > > > throwing parts at it to see if that will resolve the problem. He's a
   > > > Yamaha dealer BTW so I can't expect him to be totally up on the
Polaris
   > > > but they didn't make them that complicated back in '95.
   > > >
   > > > Any ideas what it might be? All input would be welcome. I need to keep
   > > > this PWC running for at least 2 more years. <wink>
   > > >
   > > > Chris
 >
 >
 >
 > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
 > <a style='text-decoration: underline;' href="http://www.newsfeeds.com" target="_blank">http://www.newsfeeds.com</a> - The #1 Newsgroup Service in the World!
 > -----== Over 80,000 Newsgroups - 16 Different Servers! =-----<!-- ~MESSAGE_AFTER~ -->
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Wet Wolf1

External


Since: Jul 06, 2003
Posts: 8



(Msg. 8) Posted: Tue Jul 08, 2003 6:51 am
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

nope, they tried (polaris) teeing them between carbs, but bottom line is, the
stock fuel pump just cant move enough
GPM to keep up with the motor.

Bruce

Wolf wrote:

 > Is there not a way to move the fuel pump to the center of the cyl's to
 > correct this leaning of # 3
 >
 > "Wet Wolf" <wetwolf.DeleteThis@icehouse.net> wrote in message
 > news:3F0A23FD.DDF40D22@icehouse.net...
  > > you guys forgot the most obvious answer -- fuel pump-- Those boats had
 > a
  > > dinky little fuel pump that was barely able to support a 650 motor, let
 > alone
  > > a 750. I'd bet a buk that its the oem pump and has never been rebuilt, and
  > > even if it has, its still not enough. you have probably lean siezed a cyl.
 > a
  > > compression test will show that, so you are gonna have to rebuild the top
 > end,
  > > and while your at it, rebuild the fuel pump and get another one to boot
 > and
  > > hook em' both up, or just get a 780 fuel pump. Tom is right about checking
 > the
  > > other stuff, polaris did have problems in thosde years with the filler
 > necks
  > > and auto-cock (if it had it) and the rubber piece in the petcock can spin
  > > around and shorten fuel supply, but most important is the extra pump
 > volume
  > >
  > >
  > > Bruce Wolford
  > > Wet Wolf Tech
  > > 509-280-5444
<font color=green>  > > <a style='text-decoration: underline;' href="http://www.wetwolf.com</font" target="_blank">http://www.wetwolf.com</font</a>>
  > >
  > > Tom Howlin wrote:
  > >
   > > > Chris,
   > > >
   > > > The gas filler neck needs to be replaced immediately. It was a known
   > > > problem and the new filler/cap combination is made out of much tougher
   > > > material. I'd be real surprised if you didn't have water in the fuel
   > > > from the split. Also make sure the fuel vent line is working (it allows
   > > > air to enter the tank so it doesn't create a vacuum). I doubt that is
   > > > it because the split would probably allow enough air in on its own. The
   > > > other possible problem is a broken seal between the fuel pickup tube and
   > > > the top assembly where the lines connect. It starts sucking air instead
   > > > of gas and can't get enough to run the ski at full throttle. The only
   > > > easy way to fix it is to run the ski on a separate fuel supply with
   > > > gravity feed to the fuel petcock. Also, the fuel petcocks have been
   > > > known to fail or at least become partially blocked. Polaris played
   > > > around with what they called an "auto-cock" that was vacuum operated and
   > > > shut off the fuel flow when the engine wasn't running but I think it was
   > > > gone by 95.
   > > >
   > > > Tom
   > > >
   > > > Chris wrote:
   > > >
   > > > > My '95 Polaris SL750 is having problems running. It will start and run
   > > > > fine, with full power and then just die or sputter out after about 30
   > > > > seconds to 3 minutes. It will then be hard to start (10 to 15 tries)
 > but
   > > > > will start, idle poorly for about 15 seconds, improve for a bit and
 > then
   > > > > just die again. Fuel filter is clean, plugs are dry and slightly
 > beige-
   > > > > grey, new-gas, lots of oil.
   > > > >
   > > > > I added some gas stabilizer/cleaner a week ago with no improvement and
   > > > > took the airbox off a ran some carb cleaner through it this past
 > weekend
   > > > > with no improvement.
   > > > >
   > > > > I did notice a small crack in the gas filler neck on the outside just
   > > > > under the cap this past weekend but I religiously check the fuel/water
   > > > > separator for contamination but there never seems to be more than a
 > few
   > > > > drops of water in it.
   > > > >
   > > > > It has been doing this since I picked it up from my local marine
 > dealer
   > > > > in June who stores it for me over the winter. It ran fine on his hose
 > he
   > > > > said but has gotten progressivly worse in the last 3 weeks.
   > > > >
   > > > > It's at the dealers shop right now and I don't want him to just start
   > > > > throwing parts at it to see if that will resolve the problem. He's a
   > > > > Yamaha dealer BTW so I can't expect him to be totally up on the
 > Polaris
   > > > > but they didn't make them that complicated back in '95.
   > > > >
   > > > > Any ideas what it might be? All input would be welcome. I need to keep
   > > > > this PWC running for at least 2 more years. <wink>
   > > > >
   > > > > Chris
  > >
  > >
  > >
  > > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
  > > <a style='text-decoration: underline;' href="http://www.newsfeeds.com" target="_blank">http://www.newsfeeds.com</a> - The #1 Newsgroup Service in the World!
  > > -----== Over 80,000 Newsgroups - 16 Different Servers! =-----



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Scott Moseman

External


Since: Jul 08, 2003
Posts: 8



(Msg. 9) Posted: Tue Jul 08, 2003 12:21 pm
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

JetskiMechanic.com sells a high-volume, 3-outlet
Mikuni fuel pump for US$40. That is what I used
on my SL750 to upgrade the fuel system. All you
need is a little extra fuel hose (cheap) and you
are good to go. Only took a few minutes of work.

Scott Moseman
scottm RemoveThis @highflow.net


On Tue, 8 Jul 2003, Wolf wrote:
:
: So what is the cheapest fix...... ( I really don't
: want to spend $450.00 cnd. on a new pump) Is there
: a after market pump I can use?
:
 >> Stay informed about: Polaris SL750 Problems 
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Scott Moseman

External


Since: Jul 08, 2003
Posts: 8



(Msg. 10) Posted: Tue Jul 08, 2003 3:51 pm
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

I do not believe it really has a model number.
Click on "Parts Index" and then "Fuel Pumps".
It's called "MIKUNI HIGH VOLUME FUEL PUMP" for
$39.95 and says "70 liters per hour rated" in
the description. I think it is the only fuel
pump on that page, actually. The rest is just
other carb items for rebuilding and replacing.

Send them an email if you have any questions.
They are helpful and know what you will want,
as it is a common upgrade for the SL750s.

Scott Moseman
scottm.TakeThisOut@highflow.net



On Tue, 8 Jul 2003, Wolf wrote:
:
: Do you know the model # of the pump you used?
:
: "Scott Moseman" <scottm.TakeThisOut@highflow.net> wrote:
: >
: > JetskiMechanic.com sells a high-volume, 3-outlet
: > Mikuni fuel pump for US$40. That is what I used
: > on my SL750 to upgrade the fuel system. All you
: > need is a little extra fuel hose (cheap) and you
: > are good to go. Only took a few minutes of work.
: >
: > On Tue, 8 Jul 2003, Wolf wrote:
: > :
: > : So what is the cheapest fix...... ( I really don't
: > : want to spend $450.00 cnd. on a new pump) Is there
: > : a after market pump I can use?
: > :
 >> Stay informed about: Polaris SL750 Problems 
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Wolf1

External


Since: Jul 07, 2003
Posts: 5



(Msg. 11) Posted: Tue Jul 08, 2003 5:19 pm
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

So what is the cheapest fix...... ( I really don't want to spend $450.00
cnd. on a new pump) Is there a after market pump I can use?


"Wet Wolf" <wetwolf RemoveThis @icehouse.net> wrote in message
news:3F0A535A.79F545A2@icehouse.net...
 > nope, they tried (polaris) teeing them between carbs, but bottom line is,
the
 > stock fuel pump just cant move enough
 > GPM to keep up with the motor.
 >
 > Bruce
 >
 > Wolf wrote:
 >
  > > Is there not a way to move the fuel pump to the center of the cyl's to
  > > correct this leaning of # 3
  > >
  > > "Wet Wolf" <wetwolf RemoveThis @icehouse.net> wrote in message
  > > news:3F0A23FD.DDF40D22@icehouse.net...
   > > > you guys forgot the most obvious answer -- fuel pump-- Those boats
had
  > > a
   > > > dinky little fuel pump that was barely able to support a 650 motor,
let
  > > alone
   > > > a 750. I'd bet a buk that its the oem pump and has never been rebuilt,
and
   > > > even if it has, its still not enough. you have probably lean siezed a
cyl.
  > > a
   > > > compression test will show that, so you are gonna have to rebuild the
top
  > > end,
   > > > and while your at it, rebuild the fuel pump and get another one to
boot
  > > and
   > > > hook em' both up, or just get a 780 fuel pump. Tom is right about
checking
  > > the
   > > > other stuff, polaris did have problems in thosde years with the filler
  > > necks
   > > > and auto-cock (if it had it) and the rubber piece in the petcock can
spin
   > > > around and shorten fuel supply, but most important is the extra pump
  > > volume
   > > >
   > > >
   > > > Bruce Wolford
   > > > Wet Wolf Tech
   > > > 509-280-5444
<font color=brown>   > > > <a style='text-decoration: underline;' href="http://www.wetwolf.com</font" target="_blank">http://www.wetwolf.com</font</a>>
   > > >
   > > > Tom Howlin wrote:
   > > >
   > > > > Chris,
   > > > >
   > > > > The gas filler neck needs to be replaced immediately. It was a
known
   > > > > problem and the new filler/cap combination is made out of much
tougher
   > > > > material. I'd be real surprised if you didn't have water in the
fuel
   > > > > from the split. Also make sure the fuel vent line is working (it
allows
   > > > > air to enter the tank so it doesn't create a vacuum). I doubt that
is
   > > > > it because the split would probably allow enough air in on its own.
The
   > > > > other possible problem is a broken seal between the fuel pickup tube
and
   > > > > the top assembly where the lines connect. It starts sucking air
instead
   > > > > of gas and can't get enough to run the ski at full throttle. The
only
   > > > > easy way to fix it is to run the ski on a separate fuel supply with
   > > > > gravity feed to the fuel petcock. Also, the fuel petcocks have been
   > > > > known to fail or at least become partially blocked. Polaris played
   > > > > around with what they called an "auto-cock" that was vacuum operated
and
   > > > > shut off the fuel flow when the engine wasn't running but I think it
was
   > > > > gone by 95.
   > > > >
   > > > > Tom
   > > > >
   > > > > Chris wrote:
   > > > >
   > > > > > My '95 Polaris SL750 is having problems running. It will start and
run
   > > > > > fine, with full power and then just die or sputter out after about
30
   > > > > > seconds to 3 minutes. It will then be hard to start (10 to 15
tries)
  > > but
   > > > > > will start, idle poorly for about 15 seconds, improve for a bit
and
  > > then
   > > > > > just die again. Fuel filter is clean, plugs are dry and slightly
  > > beige-
   > > > > > grey, new-gas, lots of oil.
   > > > > >
   > > > > > I added some gas stabilizer/cleaner a week ago with no improvement
and
   > > > > > took the airbox off a ran some carb cleaner through it this past
  > > weekend
   > > > > > with no improvement.
   > > > > >
   > > > > > I did notice a small crack in the gas filler neck on the outside
just
   > > > > > under the cap this past weekend but I religiously check the
fuel/water
   > > > > > separator for contamination but there never seems to be more than
a
  > > few
   > > > > > drops of water in it.
   > > > > >
   > > > > > It has been doing this since I picked it up from my local marine
  > > dealer
   > > > > > in June who stores it for me over the winter. It ran fine on his
hose
  > > he
   > > > > > said but has gotten progressivly worse in the last 3 weeks.
   > > > > >
   > > > > > It's at the dealers shop right now and I don't want him to just
start
   > > > > > throwing parts at it to see if that will resolve the problem. He's
a
   > > > > > Yamaha dealer BTW so I can't expect him to be totally up on the
  > > Polaris
   > > > > > but they didn't make them that complicated back in '95.
   > > > > >
   > > > > > Any ideas what it might be? All input would be welcome. I need to
keep
   > > > > > this PWC running for at least 2 more years. <wink>
   > > > > >
   > > > > > Chris
   > > >
   > > >
   > > >
   > > > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
   > > > <a style='text-decoration: underline;' href="http://www.newsfeeds.com" target="_blank">http://www.newsfeeds.com</a> - The #1 Newsgroup Service in the World!
   > > > -----== Over 80,000 Newsgroups - 16 Different Servers! =-----
 >
 >
 >
 > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
 > <a style='text-decoration: underline;' href="http://www.newsfeeds.com" target="_blank">http://www.newsfeeds.com</a> - The #1 Newsgroup Service in the World!
 > -----== Over 80,000 Newsgroups - 16 Different Servers! =-----<!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Polaris SL750 Problems 
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Bill ONeal

External


Since: Jun 24, 2003
Posts: 34



(Msg. 12) Posted: Tue Jul 08, 2003 5:25 pm
Post subject: Re: Polaris SL750 Problems [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)

Aftermarket snomobile fuel pumps cost about $50.00USD.

Bill O'Neal
WCM
"Wolf" <Wolfman DeleteThis @bitez.net> wrote in message
news:ppAOa.388408$ro6.9424280@news2.calgary.shaw.ca...
 > So what is the cheapest fix...... ( I really don't want to spend $450.00
 > cnd. on a new pump) Is there a after market pump I can use?
 >
 >
 > "Wet Wolf" <wetwolf DeleteThis @icehouse.net> wrote in message
 > news:3F0A535A.79F545A2@icehouse.net...
  > > nope, they tried (polaris) teeing them between carbs, but bottom line
is,
 > the
  > > stock fuel pump just cant move enough
  > > GPM to keep up with the motor.
  > >
  > > Bruce
  > >
  > > Wolf wrote:
  > >
   > > > Is there not a way to move the fuel pump to the center of the cyl's to
   > > > correct this leaning of # 3
   > > >
   > > > "Wet Wolf" <wetwolf DeleteThis @icehouse.net> wrote in message
   > > > news:3F0A23FD.DDF40D22@icehouse.net...
   > > > > you guys forgot the most obvious answer -- fuel pump-- Those
boats
 > had
   > > > a
   > > > > dinky little fuel pump that was barely able to support a 650 motor,
 > let
   > > > alone
   > > > > a 750. I'd bet a buk that its the oem pump and has never been
rebuilt,
 > and
   > > > > even if it has, its still not enough. you have probably lean siezed
a
 > cyl.
   > > > a
   > > > > compression test will show that, so you are gonna have to rebuild
the
 > top
   > > > end,
   > > > > and while your at it, rebuild the fuel pump and get another one to
 > boot
   > > > and
   > > > > hook em' both up, or just get a 780 fuel pump. Tom is right about
 > checking
   > > > the
   > > > > other stuff, polaris did have problems in thosde years with the
filler
   > > > necks
   > > > > and auto-cock (if it had it) and the rubber piece in the petcock can
 > spin
   > > > > around and shorten fuel supply, but most important is the extra pump
   > > > volume
   > > > >
   > > > >
   > > > > Bruce Wolford
   > > > > Wet Wolf Tech
   > > > > 509-280-5444
<font color=brown>   > > > > <a style='text-decoration: underline;' href="http://www.wetwolf.com</font" target="_blank">http://www.wetwolf.com</font</a>>
   > > > >
   > > > > Tom Howlin wrote:
   > > > >
   > > > > > Chris,
   > > > > >
   > > > > > The gas filler neck needs to be replaced immediately. It was a
 > known
   > > > > > problem and the new filler/cap combination is made out of much
 > tougher
   > > > > > material. I'd be real surprised if you didn't have water in the
 > fuel
   > > > > > from the split. Also make sure the fuel vent line is working (it
 > allows
   > > > > > air to enter the tank so it doesn't create a vacuum). I doubt
that
 > is
   > > > > > it because the split would probably allow enough air in on its
own.
 > The
   > > > > > other possible problem is a broken seal between the fuel pickup
tube
 > and
   > > > > > the top assembly where the lines connect. It starts sucking air
 > instead
   > > > > > of gas and can't get enough to run the ski at full throttle. The
 > only
   > > > > > easy way to fix it is to run the ski on a separate fuel supply
with
   > > > > > gravity feed to the fuel petcock. Also, the fuel petcocks have
been
   > > > > > known to fail or at least become partially blocked. Polaris
played
   > > > > > around with what they called an "auto-cock" that was vacuum
operated
 > and
   > > > > > shut off the fuel flow when the engine wasn't running but I think
it
 > was
   > > > > > gone by 95.
   > > > > >
   > > > > > Tom
   > > > > >
   > > > > > Chris wrote:
   > > > > >
   > > > > > > My '95 Polaris SL750 is having problems running. It will start
and
 > run
   > > > > > > fine, with full power and then just die or sputter out after
about
 > 30
   > > > > > > seconds to 3 minutes. It will then be hard to start (10 to 15
 > tries)
   > > > but
   > > > > > > will start, idle poorly for about 15 seconds, improve for a bit
 > and
   > > > then
   > > > > > > just die again. Fuel filter is clean, plugs are dry and slightly
   > > > beige-
   > > > > > > grey, new-gas, lots of oil.
   > > > > > >
   > > > > > > I added some gas stabilizer/cleaner a week ago with no
improvement
 > and
   > > > > > > took the airbox off a ran some carb cleaner through it this past
   > > > weekend
   > > > > > > with no improvement.
   > > > > > >
   > > > > > > I did notice a small crack in the gas filler neck on the outside
 > just
   > > > > > > under the cap this past weekend but I religiously check the
 > fuel/water
   > > > > > > separator for contamination but there never seems to be more
than
 > a
   > > > few
   > > > > > > drops of water in it.
   > > > > > >
   > > > > > > It has been doing this since I picked it up from my local marine
   > > > dealer
   > > > > > > in June who stores it for me over the winter. It ran fine on his
 > hose
   > > > he
   > > > > > > said but has gotten progressivly worse in the last 3 weeks.
   > > > > > >
   > > > > > > It's at the dealers shop right now and I don't want him to just
 > start
   > > > > > > throwing parts at it to see if that will resolve the problem.
He's
 > a
   > > > > > > Yamaha dealer BTW so I can't expect him to be totally up on the
   > > > Polaris
   > > > > > > but they didn't make them that complicated back in '95.
   > > > > > >
   > > > > > > Any ideas what it might be? All input would be welcome. I need
to
 > keep
   > > > > > > this PWC running for at least 2 more years. <wink>
   > > > > > >
   > > > > > > Chris
   > > > >
   > > > >
   > > > >
   > > > > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
   > > > > <a style='text-decoration: underline;' href="http://www.newsfeeds.com" target="_blank">http://www.newsfeeds.com</a> - The #1 Newsgroup Service in the World!
   > > > > -----== Over 80,000 Newsgroups - 16 Different Servers! =-----
  > >
  > >
  > >
  > > -----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
  > > <a style='text-decoration: underline;' href="http://www.newsfeeds.com" target="_blank">http://www.newsfeeds.com</a> - The #1 Newsgroup Service in the World!
  > > -----== Over 80,000 Newsgroups - 16 Different Servers! =-----
 >
 ><!-- ~MESSAGE_AFTER~ -->
 >> Stay informed about: Polaris SL750 Problems 
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