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celtic pagan
celtic pagan asked in Cars & TransportationCar MakesChevrolet · 8 years ago

My camaro has a weird backfire?

I been working on this camaro since before september. I've replaced Head gaskets, intake gaskets, exhaust gaskets, oil pressure switch, plugs, wires twice, starter, TPS. just to let you know the few things I have done, NOT A EASY JOB. either way I've driven little over 1000 miles on it so far and its got this weird backfire going on. I'll be driving down the road fine about 30 miles at 60mph and it has two little backfires really light can bearly hear it. and then it runs fine about 10 more miles same speed a big backfire pop sounds like a gun shot. and drive fine then about another 4 or 5 miles same speed the little backfire pop pop and drive fine. WTH . its backfireing out the exhaust. I just want to figure out what it is before it gets any worse. can ya'll help me out here.

4 Answers

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  • ?
    Lv 7
    8 years ago
    Favorite Answer

    Timing, ignition issue/coil issue, etc.

    A little tip for after the fact: Set our rocker arm/lifter preload at 1/4 turn past zero lash rather than 3/4 turn. It will perk it up, make more power and get better milage.

    camshaftshaun@gmail.com

    Source(s): Camshaft design/manufacture, full competition race engine building/development, failure analysis of internal engine components, Carb blueprinting, drivability/MPG/durability expert, chem analysis of fuel, super-tuner. I will help/advise you, sell you cams, etc; but I am MUCH too busy to baby-sit you without a fee. Yes I WILL answer a private email or two, but don't slam me with endless emails asking endless questions or me to hold your hand. You can do so after you buy something from me.
  • McGuyver
    Lv 6
    8 years ago

    the Ignition Control Module in the distributor can cause that

  • Brad
    8 years ago

    You may want to check the timing and also check for vacuum leaks

    Source(s): Muscle car dude
  • ?
    8 years ago

    problem with ignition System miss fire then double amount of fuel in cylinder witch clause back fire

    or timing

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