Question about BMW 330

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I have a BMW 3 series 330 xi and it showes the code p0300 I wasnt successful finding what's this code for. I need help.. do you knoe what's this code means ?? I also find out that my beamer has a misfire cylinder 4 with fuel cut-off.. and misfire cylinder 3 with fuel cut-off. Is it real bad ? Can I drive it the car like this ? Is this why it shakes when I turn on in morning???? I really appreciate your help thank you.

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P0300 indicated a multiple cylinder misfire. Typical causes are vacuum leaks, bad plugs, wires and/or coils. Could also be a dirty MAF. From what you describe it could also be the seal between the air cleaner housing and the MAF. Make sure the o-ring is not out of place and dry. I put some silicone lube or vasaline on it to help seal things up. That fact that it acts this way when cold points in the direction. That's what I would check first. Let me know how it works out.

Posted on Aug 30, 2010

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