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Next: Sailmonster
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External
Since: Jul 06, 2008
Posts: 15
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(Msg. 1) Posted: Tue Jul 08, 2008 11:37 pm
Post subject: plugs look too "wet"
Archived from groups: rec>boats>cruising, others (more info?)
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External
Since: May 10, 2008
Posts: 304
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(Msg. 2) Posted: Tue Jul 08, 2008 11:37 pm
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Archived from groups: rec>boats (more info?)
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On Tue, 08 Jul 2008 23:37:37 GMT, "Chuck" <chuck.TakeThisOut@mchsi.com> wrote:
>I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs. I
>think my plugs look too "wet" much like the third one shown in the photo on
>the NGK website.
>http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?nav=31200&country=US
>
>Although the motor runs pretty smoothly. I running with a 130 degree
>thermostat. What should I look at adjusting?
>
>Chuck
I'm hoping you'll get a response from one of the mechanic types who
frequent this place. But, until you do, you might try this place:
http://www.marineengine.com/discus/messages/12479/12479.shtml
or:
http://tinyurl.com/5ulymj
If it were my motorcycle, and I had a wet, oily deposit, I'd be thinking of
bad rings. If it were a wet fuel deposit, I'd be thinking carb problems.
Good luck! |
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External
Since: Mar 11, 2005
Posts: 877
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(Msg. 3) Posted: Tue Jul 08, 2008 11:37 pm
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Imported from groups: rec>boats>cruising, others (more info?)
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External
Since: Mar 11, 2005
Posts: 877
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(Msg. 4) Posted: Tue Jul 08, 2008 11:37 pm
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Imported from groups: per prev. post (more info?)
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External
Since: Mar 08, 2008
Posts: 449
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(Msg. 5) Posted: Wed Jul 09, 2008 12:06 am
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Archived from groups: rec>boats (more info?)
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On Tue, 08 Jul 2008 23:37:37 GMT, "Chuck" <chuck.RemoveThis@mchsi.com> wrote:
>I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs. I
>think my plugs look too "wet" much like the third one shown in the photo on
>the NGK website.
>http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?nav=31200&country=US
>
>Although the motor runs pretty smoothly. I running with a 130 degree
>thermostat. What should I look at adjusting?
Four stroke? If you, you've got a problem if it looks like that.
Maybe a valve not closing or oil leading past the rings. >> Stay informed about: plugs look too "wet" |
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External
Since: Jul 06, 2008
Posts: 15
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(Msg. 6) Posted: Wed Jul 09, 2008 12:15 am
Post subject: Re: plugs look too "wet" (two stroke) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Short Wave Sportfishing" <email.TakeThisOut@swsportsremove.org> wrote in message
news:k60874l5087mt5382de996p6bq4rs3vlnm@4ax.com...
> On Tue, 08 Jul 2008 23:37:37 GMT, "Chuck" <chuck.TakeThisOut@mchsi.com> wrote:
>
>>I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs.
>>I
>>think my plugs look too "wet" much like the third one shown in the photo
>>on
>>the NGK website.
>>http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?nav=31200&country=US
>>
>>Although the motor runs pretty smoothly. I running with a 130 degree
>>thermostat. What should I look at adjusting?
>
> Four stroke? If you, you've got a problem if it looks like that.
>
> Maybe a valve not closing or oil leading past the rings.
Sorry.......... damn, I knew i forgot something....... two stroke >> Stay informed about: plugs look too "wet" |
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External
Since: Nov 03, 2007
Posts: 858
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(Msg. 7) Posted: Wed Jul 09, 2008 12:15 am
Post subject: Re: plugs look too "wet" (two stroke) [Login to view extended thread Info.]
Imported from groups: per prev. post (more info?)
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External
Since: Mar 08, 2008
Posts: 449
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(Msg. 8) Posted: Wed Jul 09, 2008 1:02 am
Post subject: Re: plugs look too "wet" (two stroke) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Wed, 09 Jul 2008 00:15:24 GMT, "Chuck" <chuck DeleteThis @mchsi.com> wrote:
>
>"Short Wave Sportfishing" <email DeleteThis @swsportsremove.org> wrote in message
>news:k60874l5087mt5382de996p6bq4rs3vlnm@4ax.com...
>> On Tue, 08 Jul 2008 23:37:37 GMT, "Chuck" <chuck DeleteThis @mchsi.com> wrote:
>>
>>>I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs.
>>>I
>>>think my plugs look too "wet" much like the third one shown in the photo
>>>on
>>>the NGK website.
>>>http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?nav=31200&country=US
>>>
>>>Although the motor runs pretty smoothly. I running with a 130 degree
>>>thermostat. What should I look at adjusting?
>>
>> Four stroke? If you, you've got a problem if it looks like that.
>>
>> Maybe a valve not closing or oil leading past the rings.
>
>Sorry.......... damn, I knew i forgot something....... two stroke
Ah - well then... :>)
It could be a few things - plug isn't hot enough, you have an oil
mixture problem (as in running rich) or you need to clean the carbs
out. 130 degree thermostat is about right for that size engine.
I'd try the carb route first if it's running ok - run some carb
cleaner through it and see what happens. >> Stay informed about: plugs look too "wet" |
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External
Since: Nov 05, 2005
Posts: 442
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(Msg. 9) Posted: Wed Jul 09, 2008 3:38 am
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Archived from groups: rec>boats>cruising, others (more info?)
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gfretwell RemoveThis @aol.com wrote in
news:cba8749iqem6k5209i3kl3l4v0e845cbp4@4ax.com:
> On Wed, 09 Jul 2008 02:33:17 +0000, Larry <noone RemoveThis @home.com> wrote:
>
>>When I sold a 150hp 6-cyl Merc Sport Jet with 3 deuces carbs on it,
>>having run its whole life on 25:1, you could still see the hone marks
>>on the cylinder walls and every bearing in the crankcase was as tight
>>as new.... (c;...hundreds of hours later after running wide open all
>>that time.
>
> If it was running so well why was anyone looking at bearings and
> cylinder walls?
>
I have a borescope and the guy who wanted to buy it wanted to see?
Will that do? >> Stay informed about: plugs look too "wet" |
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External
Since: Mar 11, 2005
Posts: 877
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(Msg. 10) Posted: Wed Jul 09, 2008 3:38 am
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Imported from groups: per prev. post (more info?)
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External
Since: Oct 12, 2007
Posts: 1680
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(Msg. 11) Posted: Wed Jul 09, 2008 5:34 am
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Jul 8, 7:37 pm, "Chuck" <ch....DeleteThis@mchsi.com> wrote:
> I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs. I
> think my plugs look too "wet" much like the third one shown in the photo on
> the NGK website.http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?na...
>
> Although the motor runs pretty smoothly. I running with a 130 degree
> thermostat. What should I look at adjusting?
>
> Chuck
Looks to me that it may just be loading up, like idling too long
before you shut down. Take the thing out, get it up to temp and make a
run with it, then shut it down and look at the plugs. If they are
still wet after making an at speed run, you may have a too rich fuel/
oil ratio, or a carb problem. >> Stay informed about: plugs look too "wet" |
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External
Since: Nov 03, 2007
Posts: 858
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(Msg. 12) Posted: Wed Jul 09, 2008 9:13 am
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Imported from groups: rec>boats (more info?)
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External
Since: Nov 25, 2007
Posts: 72
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(Msg. 13) Posted: Wed Jul 09, 2008 9:54 am
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Chuck wrote:
> I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10
> plugs. I think my plugs look too "wet" much like the third one shown in
> the photo on the NGK website.
> http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?nav...200&cou
>
>
> Although the motor runs pretty smoothly. I running with a 130 degree
> thermostat. What should I look at adjusting?
>
> Chuck
This reminds me to give mine a check while we are at it. But before I
do, I am curious to know if anyone ever bothers to clean em, and if so,
with what, or do you always replace? I had always just replaced them. My
thinking is compared to an engine rebuild or replacement, the investment
is worth it in my mind. The engine in question in this case is a 2004
Yamaha 300 HPDI. >> Stay informed about: plugs look too "wet" |
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External
Since: Jul 06, 2008
Posts: 15
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(Msg. 14) Posted: Wed Jul 09, 2008 1:23 pm
Post subject: Re: plugs look too "wet" (two stroke) [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Gene Kearns" <gene.boating.TakeThisOut@myworkshop.idleplay.net> wrote in message
news:2c3874pc0qma7h7j9h2iagej1vup7vqqf8@4ax.com...
> On Wed, 09 Jul 2008 00:15:24 GMT, Chuck penned the following well
> considered thoughts to the readers of rec.boats:
>
>>
>>"Short Wave Sportfishing" <email.TakeThisOut@swsportsremove.org> wrote in message
>>news:k60874l5087mt5382de996p6bq4rs3vlnm@4ax.com...
>>> On Tue, 08 Jul 2008 23:37:37 GMT, "Chuck" <chuck.TakeThisOut@mchsi.com> wrote:
>>>
>>>>I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10
>>>>plugs.
>>>>I
>>>>think my plugs look too "wet" much like the third one shown in the photo
>>>>on
>>>>the NGK website.
>>>>http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?nav=31200&country=US
>>>>
>>>>Although the motor runs pretty smoothly. I running with a 130 degree
>>>>thermostat. What should I look at adjusting?
>>>
>>> Four stroke? If you, you've got a problem if it looks like that.
>>>
>>> Maybe a valve not closing or oil leading past the rings.
>>
>>Sorry.......... damn, I knew i forgot something....... two stroke
>
> If it is wet with oil, you are either running over rich or with the
> wrong ratio of fuel to oil. That engine probably wasn't meant to run
> with resistor plugs, but I doubt that would hurt, either.
>
> When did it last run correctly? What changed?
>
It ran great last summer. Admittedly it lacks a bit of power this season.
Could the gas be sour even though I used stabil? I am so accustomed to
looking at plugs on four strokes that when I saw those wet looking plugs I
was shocked. I double checked and it is the right plug for that model
engine. So in answer to your question.... what has changed is that the gas
has "aged." I will let it run down and refill with fresh. >> Stay informed about: plugs look too "wet" |
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External
Since: Jul 06, 2008
Posts: 15
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(Msg. 15) Posted: Wed Jul 09, 2008 1:24 pm
Post subject: Re: plugs look too "wet" [Login to view extended thread Info.]
Archived from groups: rec>boats>cruising, others (more info?)
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<gfretwell RemoveThis @aol.com> wrote in message
news:78887493373aup3gm1qob1232eka46q4ea@4ax.com...
> On Tue, 08 Jul 2008 23:37:37 GMT, "Chuck" <chuck RemoveThis @mchsi.com> wrote:
>
>>I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs.
>>I
>>think my plugs look too "wet" much like the third one shown in the photo
>>on
>>the NGK website.
>>http://www.ngksparkplugs.com/techinfo/spark_plugs/faq/faqread2.asp?nav=31200&country=US
>>
>>Although the motor runs pretty smoothly. I running with a 130 degree
>>thermostat. What should I look at adjusting?
>>
>>Chuck
>
>
> Before I got crazy and tried to "fix" a motor that was running well I
> would ask, how far did you have to idle back to the ramp before you
> pulled these plugs?
> If this is running well other the entire range I might try a little
> hotter plug, if it is loading up when you idle you could play with the
> idle screws a little but be careful you don't break it.
I see your point about the idling...... it took me at least 10 minutes
running at idle rpm. I never thought of that. BTW, this is an automatic
oil injection system and so I cant adjust the fuel/oil mixture ratio. >> Stay informed about: plugs look too "wet" |
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