I have a 82 GS850G with 56k on it. During my general tune up and valve check I usually do a compression check. The compression was low 115-130 PSI (supposed to range between 128-171). I'm not burning any oil,(no smoke out the exhaust) and I haven't lost any power. I checked with a local bike shop mechanic and he said he wouldn't worry about the low compression if I not seeing smoke out the exhaust he did suggest a leak down test. What is an acceptable psi loss in a leak down test. I did 1/2 ounce of oil in the cylinders and the compression raised 20 PSI. Any suggestions would be great. Thanks. Bob Shaw
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Compression & leakdown test
- Thread starter Bob Shaw
- Start date
Well, who want's to open up an engine anyway? (DIYer stampede here)
Of course you've lost power, don't be ignorant.
Of course you've lost power, don't be ignorant.
R
Rensdw
Guest
Warm up the bike and then do a compression test, if you pour in oil you will screw up the test result.
Pouring in some oil is a way of testing worn piston rings, in your case: changing piston rings will probably help gain some power and compression back.
If you don't need/use the power leave it as is like all the others are saying here
Pouring in some oil is a way of testing worn piston rings, in your case: changing piston rings will probably help gain some power and compression back.
If you don't need/use the power leave it as is like all the others are saying here
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