i did compression test on my sierra cosworth 4x4
i made test on cold engine an result is bad
1 - 7,6bar
2 - 7,6bar
3 - 7,6 bar
4 - 8bar
How should i do the test on warm or cold engine?
Should it has better results on warm engine

 

Warm is better mate, think a good reading is 150odd psi but main thing is their pretty consistent which is what u want!!