4 MISFIRE, HIGH INTAKE AIR CODES ARE COMING UP

  • Tiny
  • kimberley2421
  • 2001 Oldsmobile Alero
  • 175,000 miles

Already changed the head gaskets new spark plugs and wires the car isnt overheating whats wrong changed the head gaskets thermostat water pump spark plugs wires car has a complete makeover were did I go wrong

Sunday, December 4th, 2011 AT 12:47 PM

1 Answer

  • Tiny
  • hmac300
  • Expert
  • 42,100 posts

Check the fuel pressure. If it's low it will cause a misfire. Also check for a vacuum leak.

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Sunday, December 4th, 2011 AT 2:43 PM

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