Question about BMW 330
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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Posted on Jan 02, 2017
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