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Old 01-07-2013, 07:35 PM
Chuck Scifers Chuck Scifers is offline
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Location: San Jose, Ca
Join Date: Jul 2008
Posts: 4
Mein Auto: BMW, M-B
Engine is missing

Within the last 1000 miles, I had a new O2 sensor, gaskets replaced on the intake manifold to pass smog. The car was clean, but the "check engine" light would stay on.
The other day, When I started the car, the light came on and there was a noticible missing, shudder.
The OBD indicated PO 300, 304 & 308. This indicates that cylinders 4 & 8 are misfiring. I changed the plugs, but did not help. Is there a way to troubleshoot this problem, perhaps checking if coils are good, etc? what else?
Please help.

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