[s-cars] Engine Compression Test (Warm or Hot?)

James Murray (LMC) James.Murray at ericsson.ca
Mon Nov 25 09:44:15 EST 2002


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Does a compression test need to be done while the engine is warm? Or can it=
 be done while cold?

I did one while the engine was cold and got a fairly consistant 11 or 11.5 =
bar on all 5 cylinders. Specifications are between 9 Bar and 13 Bar and the=
 wear limit is supposed to be 7 Bar, while max difference between cylinders=
 is 3 Bar.

Just wondering if I need to re-run the test to ensure I got valid data?

Cheers, /James



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