finley got it i think(WRONG going in the shop wed.)

[ohio river rat in KY]

fixing one thing after another and still have not got to the source of the main problem what could be causing this timing is right carbs are adjusted says my boat mec. or could he be off on it and new plugs running high octane gas with sea foam so any ideas ??? and still dieing when putting it in forward gear. and new fuel pump and all new line. when i pulled the plugs they are wet and black looking with crud on them i guess from the carbon breaking up ?

 

[j_martin]

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

fixing one thing after another and still have not got to the source of the main problem what could be causing this timing is right carbs are adjusted says my boat mec. or could he be off on it and new plugs running high octane gas with sea foam so any ideas ??? and still dieing when putting it in forward gear. and new fuel pump and all new line. when i pulled the plugs they are wet and black looking with crud on them i guess from the carbon breaking up ?

High octane gas in a low compression engine burns smoky and sooty. So does SeaFoam.

A little wet and a little dark is normal. If it gets too dry, it'll overheat and melt down a piston.

Try running ordinary gas, (going from 87 to 91 to avoid ethanol is OK) and ordinary oil, your choice, run it hard if it's happy doing that, but don't push it if it balks, somethings wrong. Then take another look.

The way to use SeaFoam is to mix up about a gallon of fuel (with oil if needed) in a pony tank, add a can of SeaFoam, and run it through the engine. Do it on the muffs. It's hard enough on the engine without trying to make power. Have spare plugs on hand, and be prepared to deal with angry neighbors if the wind is their way. I run most of it through, then kill the engine by spraying SeaFoam in the carbs. Then I let it sit for awhile. Then I fire it up on it's normal fuel, and clean it out. Usually I just put in a set of new plugs, but you can just replace any that fouled.

hope it helps
John

 

[Fuzzytbay]

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

timing is right carbs are adjusted says my boat mec. or could he be off on it ...and still dieing when putting it in forward gear. ?

Ok I have no idea of what your motor is, but if its dieing going into gear, your mechanic is off, find a new one, if he is saying its good.
I'd vote carb, idle mixtures not rich enough, or the idles set to low,or the floats miss adjusted.
The carbons from running the seafoam I suspect.
Johns posted the correct procedure for using it. Maybe some in the last seasons gas, so you can stablize the fuel over the off season, but don't run it in every tank.

 

[ohio river rat in KY]

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

thanks 4 all the info. just went to the ramp to try it out again same thing.. a man was there said he works on boats in his spare time he seems to think that it is my linkage and told me to throw out my plugs and get some with the prong on them like car plugs said it would get better fire.....now is this true?do i need to try this or would it even make a difference?

 

[ohio river rat in KY]

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

Re: plugs wet and pistions showing alot of carbon build up whats the cause?

ok i got the new plugs with the arm on them, drug out the horse troth and filled it up put it in gear it hesitated alittle so on my mixture screws i screwed all the way in and backed out 1 and 1/2 turns and adjusted the about a 1/8 of a turn out at a time until it sounded good to me.i think the top is out 1 and 3/4 and the bottom is out a full 2 turns, now i put it in gear and its doing fine in the water troth if it trys to die just give it a little gas and it does good i can back it all the way off and it still runs lets just hope it does it in the river.

 

[Gomer50]

Re: finley got it i think

Re: finley got it i think

Just my 2 cents,be careful on your choice of spark plugs I was told by the merc guru that if you dont have the correct plug concerning the heat factor that the plug will burn at can and will damage these motors.I personally choose the NGK no gap plugs and have worked well.Happy Boating...

 

[ohio river rat in KY]

had a gut full

had a gut full

done the same thing on the water to-day so its going back to the shop a different one this time

 

[ohio river rat in KY]

Re: finley got it i think(WRONG going in the shop wed.)

just got it out monday yes 2 months so we took it out Saturday and done good for about 30 min. or so and guess what died and then the same thing so i said the hell with it and traded straight across for a 1980 baretta inboard 120 hope this one does better needs a little inter work and the reverse cable adjusted. wish us luck