force125 cylinder loss

jgibson712

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Jul 9, 2002
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I have a force 125 i have 165 lbs compression on all but the #2 cylinder it holds 30 lbs there is alot of guck on the top of the piston any clues?
 

revertmastec

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Nov 16, 2001
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279
Re: force125 cylinder loss

Try decarbon the motor, may get rid of the carbon and free up rings to give you more compression.
 

jgibson712

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Jul 9, 2002
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Re: force125 cylinder loss

well tried the decarbonizing, Didnt work so I got a wild hair and pulled the head. Not Good I have 6 holes in the piston. There is a scar about .030 in the ctlinder wall. Any suggestions on the cheapest yet durable way out?
 

revertmastec

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Nov 16, 2001
Messages
279
Re: force125 cylinder loss

The cheapest way out would be to bore that cylinder and put a new oversizes piston in.
 

91Force90hp

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Jul 10, 2002
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Re: force125 cylinder loss

I have a similiar problem. No gauge to tell but have very little or no compression <br />in the bottom cylinder. Pulled the head, piston looks OK, and cylinder fairly clean.<br />Should I re-ring it? If so, how much trouble is it to get piston out?? Thanks.
 

Deerdog

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May 31, 2001
Messages
115
Re: force125 cylinder loss

Would agree that the cheapest way in teh short run is to do that one cylinder - especially if the others are at 165 - the topend of the spec for compression.<br /><br />Before you go too far I would find out what caused the holes in teh piston first or you may be repeating the problem in a few weeks after getting back together. Holes being burned in a piston usually come from too lean a fuel/air mix. <br /><br />Good Luck<br />Deerdog
 
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