how to clean piston rings on a johnson

M

mrprior

Cadet
Joined
May 17, 2009
Messages
6
i have a 1954 5.5hp cd 11 and it smokes like crazy. i already changed the oil ration to 24:1 and im using johnson outboard oil. i put seafoam in the gas and it still smokes. the only thing i can think of now is that i have a lot of carbon build up on the piston ring. how can i get that carbon off there?
 
C

crxess

Chief Petty Officer
Joined
Apr 30, 2009
Messages
559
Re: how to clean piston rings on a johnson

Look in Secret File post at top of this forum. Follow steps to Decarb motor.
Expect a ton of smoke during the process.
 
Chinewalker

Chinewalker

Fleet Admiral
Joined
Aug 19, 2001
Messages
8,902
Re: how to clean piston rings on a johnson

Do all that and your motor is going to smoke. It's supposed to. It tells you you have plenty of oil in the gas - which is a good thing. Some synthetic oils will smoke less. But, if you go synthetic, DO NOT cut back on the ratio. Your motor is a plain bearing motor and the oil acts as a cushioning and sealing agent, in addition to being a lubricant... It needs the extra volume as much as the lubrication...
- Scott
 
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