I HAVE AN EXHAUST BACKFIRE AND THE ENGINE ROADS ...

  • Tiny
  • Anonymous
  • 2003 BMW 330ci
  • 73,000 miles

I have an exhaust backfire and the engine roads rough I mean lack of pull no fault codes have changed the o2 sensors ccv spark plugs cat tested. What should I do?

Wednesday, November 28th, 2012 AT 7:50 PM

1 Answer

  • Tiny
  • Dr. Hagerty
  • Expert
  • 9,717 posts

Are the coils new?

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Monday, December 3rd, 2012 AT 5:31 PM

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