can a compression test be done with the engine cold because ive always letthe engine warm up, remove plugs, insert tester into plug hole and turn over? the only problem is this time is that i cant start my engine to do this but with the oil not thinning outthis causes a problem? is there another method i can use?

 

It has to be done hot...

why are you worried about the oil?

Alex

 

Really?

 

It has to be done hot with your foot flat to the floor while you crank it over

 

because if the oilis thick it works as a seal on ur rings giving a false reading