WHAT ELSE CAN I TRY????????

  • Tiny
  • bigjim1467
  • 2003 Chevrolet Truck
  • 113,000 miles

A p0300 engine code is coming on. I have replaced the intake gaskets, fuel pres regulator, fuel filter, gas cap, plugs and wires, cleaned mass air flow sensor, and ran 2 cans of BG44k fuel system cleaner through it. Any help?

Tuesday, February 7th, 2012 AT 1:03 AM

1 Answer

  • Tiny
  • BMRFIXIT
  • Expert
  • 19,554 posts

Possible bad injectors
check catalytic converter s

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Tuesday, February 7th, 2012 AT 2:15 AM

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