2003 Chevy Avalanche cylinder misfire

Tiny
CARL KINGSBURY
  • 2003 CHEVROLET AVALANCHE

Computer problem
2003 Chevy Avalanche V8 Four Wheel Drive Automatic 89000 miles

What would cause #4 &#6 cylinders to misfire at the same time. And suggestions for repair

Do you
have the same problem?
Yes
No
Sunday, June 29th, 2008 AT 11:00 AM

1 Reply

Tiny
RHALL77
  • MEMBER

Possible bad head gasket, bad injector wiring, bad PCM, bad plug wires, injectors need to be cleaned. Most likely a vaccum leak at the intake manifold. There can be a whole list of things. Did you check to see if thre was spark at the plug wires and injector pulse at the fuel injectors. Also check for a vaccum leak at that point of the intake

Was this
answer
helpful?
Yes
No
Monday, June 30th, 2008 AT 7:52 AM

Please login or register to post a reply.

Other Misfire Cylinder Questions