what should the compression of a standard engine read on the compression tester you screw into the spark plug holes.
in psi or bar.
thanxs nick

 

genarally, you should be looking for a simlar reading on each cylinder, if you have an odd 1 (or 2), you have a problem! not to sure what the readings are normaly, i would expect around 120 psi up,(although i have a nissan turbo which read 180 psi)

 

I had 9.5bar with a wild cam in a S1 engine with standard C/R, so ~10bar for a standard cam.