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Back-fire, Miss, Pinging

Tiny
JTA2006
  • MEMBER
  • CHEVROLET TRUCK
I have a 95 Chevy K1500, 5.7, 260,000 miles. For the past 6 months, this truck will start pinging, miss firing, and then back firing. This only happens when it is windy and you are going into the wind or you are pulling a trailer. There are no codes showing up. I have replaced the cap, rotor, spark plugs & wires, knock sensor, and one injector. Any help would be appreciated!
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Thursday, April 5th, 2007 AT 9:54 AM

1 Reply

Tiny
BACKYARDMECHANIC
  • MECHANIC
  • 337 POSTS
Has the timing chain every been change? Sounds like the timing is being thrown off ( Due to play in the chain) when the truck is under a load causing the motor to ping and misfire. Just something to think about. Good luck
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Thursday, April 5th, 2007 AT 10:00 AM

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