procedure to decarb 1989 110hp V4 Johnson

wems

Seaman Apprentice
Joined
Mar 15, 2008
Messages
48
Re: procedure to decarb 1989 110hp V4 Johnson

From my understanding youll want SeaFoam. and an extra small gas can, and fill like 1/3rd sea foam rest with premix of oil and gas. and spray seafoam in carb, and set your idle like 1500RPMs, and drive around for 15 minutes, than turn off for 15 minutes and spray more seafoam, and repeat until you dont see as much smoke..

(im not 100% postive, mainly posting to see where im wrong as for when I decarb my motor I dont want to do it wrong ;) )

but GL.
 

tashasdaddy

Honorary Moderator Emeritus
Joined
Nov 11, 2005
Messages
51,019
Re: procedure to decarb 1989 110hp V4 Johnson

Decarb, take a can of seafoam put 3/4 of it in the gas tank, with only 1 gallon of premixed gas. put the rest in a spray bottle. start the engine, and let it come up to temperature. then remove plugs, and them some real good shot of seafoam into the cylinders, replace plugs, let sit 15 minutes. restart, and spray the rest of the seafoam into the carbs, so the the motor almost stalls, wait and repeat until the seafoam is gone.then take for a wide open spin. then put in new plugs, ad premixed gas to the tank, and take it for a wide open throttle spin. it is going to smoke like a house on fire, during this process.

afterwards compression.recheck
 
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