99 yukon 5.7 misfire

Discussion in 'GM Powertrain' started by sargewc, Feb 11, 2011.

  1. sargewc

    sargewc New Member

    I bought this yukon a few months ago,it had a miss but i didnt think it was nothing major since i bought it from a woman.I gave it a tune up,plugs,wires,distributor cap,and rotor bug.It still says number 5 misfire.I replaced the coil,and distributor.So maybe it was a fuel injector,i replaced the spider and nothing has changed,Now im stumped and dont know what to do,any suggestions?
  2. murdog94

    murdog94 Epic Member 5+ Years 5000 Posts

    Intake gaskets? Or else damage to the head. Also try a compression test.

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