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1999 Dodge Durango Backfire through intake

Tiny
DONDEGO
  • MEMBER
  • 1999 DODGE DURANGO
  • V8
  • 4WD
  • AUTOMATIC
  • 131,000 MILES
My wifes truck would not start. It will turn over, we can smell gas in the exhaust. But when we were cranking it, it back fired through the intake hard enough to blow the airfilter cover off and break the tabs that hold it on billowing smoke. I put a spark checker on it and got spark on 2 plugs. (Its 22degs outside). I guess the next thing to check is compression?
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Tuesday, January 19th, 2010 AT 7:02 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,938 POSTS
HI there,

To get an intake back fire you need an ignition source to ignite the mixture in the manifold, this is normally due to cross firing leads (Voltage leaking across the leads) or a cracked & tracking distributor cap, I would be checking these first.

Mark (mhpautos)
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Tuesday, January 19th, 2010 AT 7:29 PM

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