Here we go again

Discussion in 'Maintenance & Upkeep' started by brickborn, Oct 11, 2011.

  1. brickborn

    brickborn New Member

    Hey guys may be a easy one this time I hope . I have three cylinders not firing on my 1990 gmc suburban . 4,6,8 . Checked plug gaps and also changed just to be sure . Could it be cap . Or rotor ? Need some help fellas .
  2. ahm1127

    ahm1127 Rockstar 100 Posts

    How do you know there not firing? Did you check cap &/or wires?
  3. dedmon27

    dedmon27 Rockstar 100 Posts

    Could very well be cap and rotor. As well as the wires but I'm sure all the wires didn't go bad at the same time.

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