1997 Holden Commodore backfiring

Tiny
STIFFA
  • MEMBER
  • 1997 HOLDEN COMMODORE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 205,000 MILES
My VS wagon continues to backfire under load when the car is at operating temp. When its cold it does not backfire.
I have changed the plugs and leads. I have also had the coils and DFI module changed and the car serviced.

Any ideas on why it continues to backfire under load

cheers
Wednesday, February 24th, 2010 AT 11:46 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

Is this an exhaust or induction back fire, I would check the comps hot, and get a exhaust analyzer hook up, if it is running to lean, this will cause a back fire start here.

Mark (mhpautos)
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Thursday, February 25th, 2010 AT 4:12 PM

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