Low smoke oil ?? which one ?

pecheux

Lieutenant Junior Grade
Joined
Jun 9, 2006
Messages
1,200
To y'awl's knowledge and experience, which oil would be more likely to have my 15hp Force smoke less. There is a lot of smoke back there ... especialy when troling or right after. I own a 1981 Johnson 9.9 that dont smoke at all.

Would the smoke have something to do with the HP (15)or the motor (1997 Force) ?

Tx
 

roscoe

Supreme Mariner
Joined
Oct 30, 2002
Messages
21,758
Re: Low smoke oil ?? which one ?

Pick your oil. I prefer synthetic, reduce smoke greatly on 3 of my motors.
Properly clean and adjust carb.


Perhaps some of that smoke is actually steam.
 

b.gagnon

Master Chief Petty Officer
Joined
Apr 28, 2001
Messages
835
Re: Low smoke oil ?? which one ?

Put a 15hp carb on the johnson....
 

pecheux

Lieutenant Junior Grade
Joined
Jun 9, 2006
Messages
1,200
Re: Low smoke oil ?? which one ?

b.gagnon: I wont fix something that's not broken, plus it takes much more than a carb change to bring a 9.9 to 15. Intake and exhaust port have to be modified and that will cost as much as buying a new motor. Admitedly 15hp are hard to find, which explains why I bought that Force 15hp .

Cheers
 
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