1997 GMC C1500 Misfire

1997 GMC C1500
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BOB655
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Engine Performance problem
1997 GMC C1500 V8 Four Wheel Drive Automatic
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My vehicle is a 1997 GMC 5.7 liter vortec 4 wheel drive. I have been experiencing a misfire on cylinder #6. I changed the rotor, distributer cap, plug wires, spark plugs, new oxygen sensors (although probably not necessary), and ran a compression test that showed that all cylinders were OK . Could this possibly be an injector issue? What else might be a cause for this problem and what else could I check? Once again, this is only occuring on number 6.
Jul 14, 2008 at 11:46 PM
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RHALL77
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i would try and clean the injectors. sounds like a possible stuck injector. maybe also a vacuum leak in the intake manifold.
Jul 29, 2008 at 9:50 PM