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plugs look too "wet"
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/techinf...200&country=US Although the motor runs pretty smoothly. I running with a 130 degree thermostat. What should I look at adjusting? Chuck |
plugs look too "wet"
On Tue, 08 Jul 2008 23:37:37 GMT, "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/techinf...200&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/m...79/12479.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! |
plugs look too "wet"
On Tue, 08 Jul 2008 23:37:37 GMT, "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/techinf...200&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. |
plugs look too "wet" (two stroke)
"Short Wave Sportfishing" wrote in message ... On Tue, 08 Jul 2008 23:37:37 GMT, "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/techinf...200&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 |
plugs look too "wet" (two stroke)
On Wed, 09 Jul 2008 00:15:24 GMT, "Chuck" wrote:
"Short Wave Sportfishing" wrote in message .. . On Tue, 08 Jul 2008 23:37:37 GMT, "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/techinf...200&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. |
plugs look too "wet"
"Chuck" wrote in news:5TSck.244293$yE1.55866@attbi_s21:
What should I look at adjusting? NOTHING! That's LUBE OIL coming up from the 2-stroke crankcase to keep the bearings lubed up! Why screw around with something that's running great with good lubrication?! Why does everyone have to tear apart perfectly good working things and screw it all up?! If it's a 4-stroke, you have bad rings or valve seats.....my condolences. A proper 2-stroke should be all gooey right to the end of the exhaust outlet. If it's not, dismantle the damned autoinjection used to wear out new motors fast so they can sell you more and premix the gas to 25:1 with OIL COMPANY BRAND NAME TC-W3, not the cheap crap from engine manufacturers the dealer sells! Engine manufacturers don't have oil refineries. Who knows who made it....lowest bidder?? 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. 100:1 is SUICIDE! BTW - AMSOIL IS NOT AN OIL COMPANY! |
plugs look too "wet"
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plugs look too "wet"
On Jul 8, 7:37*pm, "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/techinf...aqread2.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. |
plugs look too "wet" (two stroke)
"Gene Kearns" wrote in message ... 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" wrote in message . .. On Tue, 08 Jul 2008 23:37:37 GMT, "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/techinf...200&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. |
plugs look too "wet"
wrote in message ... On Tue, 08 Jul 2008 23:37:37 GMT, "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/techinf...200&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. |
plugs look too "wet"
"Larry" wrote in message ... "Chuck" wrote in news:5TSck.244293$yE1.55866@attbi_s21: What should I look at adjusting? NOTHING! That's LUBE OIL coming up from the 2-stroke crankcase to keep the bearings lubed up! Why screw around with something that's running great with good lubrication?! Why does everyone have to tear apart perfectly good working things and screw it all up?! If it's a 4-stroke, you have bad rings or valve seats.....my condolences. A proper 2-stroke should be all gooey right to the end of the exhaust outlet. If it's not, dismantle the damned autoinjection used to wear out new motors fast so they can sell you more and premix the gas to 25:1 with OIL COMPANY BRAND NAME TC-W3, not the cheap crap from engine manufacturers the dealer sells! Engine manufacturers don't have oil refineries. Who knows who made it....lowest bidder?? 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. 100:1 is SUICIDE! BTW - AMSOIL IS NOT AN OIL COMPANY! The only reason I checked the plugs is because the responsiveness felt a bit sluggish on the night of the 4th. It didn't have the normal top-end like it did last season. At least I feel comfortable that the plugs are supposed to look that way now "all gooey." Thanks |
plugs look too "wet"
"Chuck" wrote in message
news:v_2dk.190760$TT4.166948@attbi_s22... wrote in message ... On Tue, 08 Jul 2008 23:37:37 GMT, "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/techinf...200&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. To check the plugs you need to run at a cruising speed and then shutdown, pull the plugs and take a look at them. Idling around for anytime is going to load them up on a 2 stroke. |
plugs look too "wet"
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/techinf...200&country=US 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. |
plugs look too "wet"
On Wed, 9 Jul 2008 09:37:26 -0400, "jamesgangnc"
wrote: To check the plugs you need to run at a cruising speed and then shutdown, pull the plugs and take a look at them. Idling around for anytime is going to load them up on a 2 stroke. Any caution here about letting the heads cool down? They're aluminum, right? --Vic |
plugs look too "wet"
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plugs look too "wet"
On Wed, 09 Jul 2008 09:54:04 -0400, DownTime
wrote: 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/techinf...200&country=US 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. The plugs is the family ride looked fine at 100 000 miles, but we replaced them anyway. Platinum points of course. Two hours labor to change the plugs. Casady |
plugs look too "wet"
"Chuck" wrote in message news:5TSck.244293$yE1.55866@attbi_s21... 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/techinf...200&country=US Although the motor runs pretty smoothly. I running with a 130 degree thermostat. What should I look at adjusting? Chuck Doesn't anybody want to know what the problem turned out to be? scroll down................ down more.............................. Remember its a 60hp motor on a 24ft pontoon party boat. On the fourth of July I had 14 people on it and THAT was the reason it felt so sluggish and caused me to check the plugs, which is when I noticed they were "wet." When I have a few people on the boat it cruises easily at twenty knots. Yeah.... don't anybody say it......... go ahead.......... |
plugs look too "wet"
On Mon, 11 Aug 2008 02:10:55 GMT, "Chuck" wrote:
"Chuck" wrote in message news:5TSck.244293$yE1.55866@attbi_s21... I have a Merc 60 Bigfoot, 3-cyl outboard fitted with NGK BP8H-N-10 plugs. I think my plugs look too "wet" much like the third one shown in the photo on the NGK website. http://www.ngksparkplugs.com/techinf...200&country=US Although the motor runs pretty smoothly. I running with a 130 degree thermostat. What should I look at adjusting? Chuck Doesn't anybody want to know what the problem turned out to be? scroll down................ down more.............................. Remember its a 60hp motor on a 24ft pontoon party boat. On the fourth of July I had 14 people on it and THAT was the reason it felt so sluggish and caused me to check the plugs, which is when I noticed they were "wet." When I have a few people on the boat it cruises easily at twenty knots. Yeah.... don't anybody say it......... go ahead.......... Ah well: live and learn.... matching prop pitch to desired cruise speed is almost a black-art.... Brian W |
plugs look too "wet"
On 2008-08-10 22:10:55 -0400, "Chuck" said:
"Chuck" wrote in message news:5TSck.244293$yE1.55866@attbi_s21... 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/techinf...200&country=US Although the motor runs pretty smoothly. I running with a 130 degree thermostat. What should I look at adjusting? Chuck Doesn't anybody want to know what the problem turned out to be? scroll down................ down more.............................. Remember its a 60hp motor on a 24ft pontoon party boat. On the fourth of July I had 14 people on it and THAT was the reason it felt so sluggish and caused me to check the plugs, which is when I noticed they were "wet." When I have a few people on the boat it cruises easily at twenty knots. Yeah.... don't anybody say it......... go ahead.......... I won't, but thanks for the chuckle. -- Jere Lull Xan-à-Deux -- Tanzer 28 #4 out of Tolchester, MD Xan's pages: http://web.mac.com/jerelull/iWeb/Xan/ Our BVI trips & tips: http://homepage.mac.com/jerelull/BVI/ |
plugs look too "wet"
On Mon, 11 Aug 2008 02:10:55 GMT, "Chuck" wrote:
"Chuck" wrote in message news:5TSck.244293$yE1.55866@attbi_s21... 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/techinf...200&country=US Although the motor runs pretty smoothly. I running with a 130 degree thermostat. What should I look at adjusting? Chuck Doesn't anybody want to know what the problem turned out to be? scroll down................ down more.............................. Remember its a 60hp motor on a 24ft pontoon party boat. On the fourth of July I had 14 people on it and THAT was the reason it felt so sluggish and caused me to check the plugs, which is when I noticed they were "wet." When I have a few people on the boat it cruises easily at twenty knots. Yeah.... don't anybody say it......... go ahead.......... Nope. Glad you found the problem though. |
plugs look too "wet"
Many engines are normally 'overfueled' so that the combustion chambers
get some affect of cooling by the excess fuel flow through. Also if you were running with a heavy load and were thus 'lugging' the engine (not able to reach full rpm) youll also get some wetness on the walls, piston tops, etc. due to the unburned fuel because the engine isnt running a 'top efficiency'. |
plugs look too "wet"
On Sun, 10 Aug 2008 21:15:18 -0500, Brian Whatcott
wrote: matching prop pitch to desired cruise speed is almost a black-art.... I though you gave it enough pitch just reach maximum rated RPM at WOT. Casady |
plugs look too "wet"
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plugs look too "wet"
On Thu, 14 Aug 2008 18:11:10 -0500, Brian Whatcott
wrote: On Tue, 12 Aug 2008 23:18:41 GMT, (Richard Casady) wrote: On Sun, 10 Aug 2008 21:15:18 -0500, Brian Whatcott wrote: matching prop pitch to desired cruise speed is almost a black-art.... I though you gave it enough pitch just reach maximum rated RPM at WOT. Casady If you pitch a prop like this for a full laden boat - it can be dicey with a light laden boat, don't you think? Not really You can overrev the engine with a light load, but you dont have too. Its just that WOT is not available with a very light load. |
plugs look too "wet"
On Thu, 14 Aug 2008 18:11:10 -0500, Brian Whatcott
wrote: If you pitch a prop like this for a full laden boat - it can be dicey with a light laden boat, don't you think? The engine will turn more revs than redline at WOT Brian W |
plugs look too "wet"
"Richard Casady" wrote in message ... On Thu, 14 Aug 2008 18:11:10 -0500, Brian Whatcott wrote: If you pitch a prop like this for a full laden boat - it can be dicey with a light laden boat, don't you think? The engine will turn more revs than redline at WOT Brian W Pull back on the throttle. Eisboch |
plugs look too "wet"
On Fri, 15 Aug 2008 00:51:15 -0400, "Eisboch" wrote:
The engine will turn more revs than redline at WOT Brian W Pull back on the throttle. Wrong. You advance it to the desired RPM and leave it alone, not pull it back. Casady |
plugs look too "wet"
"Richard Casady" wrote in message ... On Fri, 15 Aug 2008 00:51:15 -0400, "Eisboch" wrote: The engine will turn more revs than redline at WOT Brian W Pull back on the throttle. Wrong. You advance it to the desired RPM and leave it alone, not pull it back. Casady Huh? The OP said the engine was turning above redline at WOT. I simply suggested reducing throttle. I don't understand your comment. Eisboch |
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