1996 GMC Sierra Upper intake gasket replaced.

1996 GMC SIERRA
205,150 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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DAZEDNCONCFUSED
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I replaced my upper intake gasket. Now when I try to start it, the starter does its job, but the crankshaft will not budge. The truck has been sitting for a week. Also when I stop trying to start it, gas comes out somewhere from the bottom end. Help!
May 18, 2015 at 8:35 AM
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JACOBANDNICKOLAS
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Is one of the cylinders filling with fuel? If you remove the spark plugs, will the crank turn then?
May 18, 2015 at 8:48 AM
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DAZEDNCONCFUSED
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Haven't thought about that. Will let you know shortly.
May 18, 2015 at 8:54 AM
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DAZEDNCONCFUSED
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Cylinders 1, 4, and 5 had fuel covered plugs, crankshaft still won't do anything.
May 18, 2015 at 9:13 AM
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DAZEDNCONCFUSED
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Okay, took a torque wrench to the crank. It moved and shot out about a half cup of fuel from cylinder 6.
May 18, 2015 at 11:37 AM
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JACOBANDNICKOLAS
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That was the problem. It caused hydrostatic lock. Either the injector is stuck and dumping fuel, or the regulator is not restricting the fuel pressure.
May 20, 2015 at 8:51 AM