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sktfourlif
Joined: 05 Oct 2009 Posts: 6
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Posted: Fri Oct 16, 2009 10:33 am Post subject: e34 525i |
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1991, 1993 m50b25tu vanos engine.
There is a misfire. The car isnt over heating. its has been running rough since i havent changed my O2 sensor. The O2 sensor arrived in the mail yesterday and i was supposed to install it today.But for some reason this random misfire started to happening last night. is it possibly because my spark plug is foul or coil is fouled up?? or could it be a faulty injector?? |
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edjack
Joined: 04 Feb 2002 Posts: 3887 Location: San Jose, CA
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Posted: Fri Oct 16, 2009 5:08 pm Post subject: |
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You mentioned two MYs. Which is it?
Have you read any codes?
How many miles on spark plugs? Remove and inspect.
Inspect the spark plug wells for a pool of oil.
O2 sensor would not cause a misfire. _________________
Ed BMW CCA member since 1987 (Nr. 62319).
'97 540i 6 speed Aspensilber over Aubergine interior. |
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