Have a '91 318 M42. Oil light is on. I have an E30 Bentley but it doesn't cover the M42. Is there some diagnosis link out there somewhere which takes you step by step to diagnose problem? I am familiar with the shifting oil pan/bolt issue but would like to diagnose pressure up top before ripping into it. I'd like to eliminate the pressure switch as the problem, etc, before pulling the pan and the front cover off. The car runs but I haven't run it since the light came on. I did not notice any audible grinding noises.
I also used the search function on this topic and didn't see anything...
Topic: oil pressure diagnosis procedure? (Read 2051 times)