I suspect my car is having an issue with compression (possibly a bad ring). I plan on doing a compression test tomorrow. Already got the tool, but now my question is what is the proper procedure to do it with the LNF?
I know I need to pull the fuse for the fuel pump and let it run until it dies, but what do I need to disconnect regarding the ignition/coils, should I do the test while the motor is cold, or let it get to operating temp first, and lastly should I pull all the plugs while testing the cylinders or only pull the plug of the cylinder I'm checking?