Rough running 1990 325i. I decided to do a compression test and all the cylinders were around 150 psi. The spark plugs were black and wet though. The engine starts up nicely cold but slowly starts running rough and stalling after about 15 minutes. Once it stalls you can’t get in running again until it cools down again.
-New Plugs
-New Wires
-New Plugs
-New Wires
Attached Files