compression numbers on 1992 Force 90HP

dcar00

Seaman Apprentice
Joined
Apr 11, 2004
Messages
44
I did a cold(not right I know, didn't have muffs with me) compression check on my 90HP 1992 Force.

110
120
120

Is this good, bad, OK?

I'm thinking about doing a decarb with seafoam in the 1 gallon tank I saw on the other sticky thread.

should I see better after that?
 

JB

Honorary Moderator Emeritus
Joined
Mar 25, 2001
Messages
45,907
Re: compression numbers on 1992 Force 90HP

Nothing wrong with those numbers, dcar.

A decarb wouldn't hurt, but don't expect it to help a lot either.
 

imported_LakeRunner

Petty Officer 2nd Class
Joined
Dec 4, 2005
Messages
174
Re: compression numbers on 1992 Force 90HP

Just don't run the motor out of the water or on muffs. Decarb may help free up a sticky piston ring but those numbers are close so you may see a few points rise but don't expect miracles. You can also squirt in some Lucas or Marvelous Miracle oil in the cylinders after you do your decarb to lube the cylinders up.
 
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