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99 yukon 5.7 misfire

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

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  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 New Member 1000 Posts 100 Posts

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

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