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Here we go again

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

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  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 New Member 100 Posts

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

    dedmon27 New Member 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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