It's Dead, Jim ('01 3.0i)

[nahvkolaj]

Originally Posted by white_335i

If like you said, cylinders 2 and 4 have 30, you should have noticed the engine misfiring when you started the car. In your earlier post, I thought you said the engine ran smooth.

I would agree with the other post above, add a tea spoon of oil in cylinders 2 and 4 and check for compression again. I had noticed this in my 330i a few years ago where I did a compression test on a healthy engine and I remember cylinder 1 had 30 psi. I added a spoon of oil to all the cylinders and it helped.

I’ll check them again with some oil squirted in. The engine did seem to run smooth when I started it last week, no misfires.