compression check motor that has been sitting 10+ yrs

F

fishkiller

Seaman
Joined
Oct 30, 2004
Messages
72
I have been looking at a motor that has been sitting for a long time and was curious if 'fogging' the cylinders with oil will give false compression readings and if it does would that false reading be equal across all cylinders? I have been looking at an older motor as that all the pocketbook can handle but I would like to check the compression 1st. but since it has been sitting I was thinking that spraying some oil in the cylinders would help prevent scarring???? any thoughts? :confused:
 
A

alcan

Commander
Joined
Dec 14, 2001
Messages
2,505
Re: compression check motor that has been sitting 10+ yrs

Hi fishkiller<br />Certainly oiling the Cylinders will raise compression. It will also pump your compression gauge full of oil as well. If you feel this motor needs some lube before you roll it over, squirt some mixed fuel down the carb (s) and in the spark holes. Disable the ignition so you have no spark. Roll the engine over at full open throtle, enough to clear the fuel. Then conduct your test. You don't say what motor your interested in, My guess is that you will need to throw another 2-3 hundred bucks into it, if it's in good shape. This would be just for general maint. items and labor.
 
L

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: compression check motor that has been sitting 10+ yrs

Don't buy anything from anybody without hearing it run and shift properly, in less your buying at scrap prices. We see alot of the, "it use to run great" engines and the long looks way to often
 
You must log in or register to reply here.
Top