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Generation III Internal Engine 1997-2006 LS1 | LS6
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head/head gasket problem

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Old 11-30-2012, 02:00 PM
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Pressure test the cooling system.
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Old 11-30-2012, 02:29 PM
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I bet its fuel from a faulty injector. Seems unlikely you have a coolant leak that smells like gas.
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Old 11-30-2012, 02:57 PM
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Check fuel rail pressure (attach an external pressure gauge on end of rail) with engine running and then shutdown.
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Old 11-30-2012, 06:33 PM
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i have a fuel pressure gauge but with a faulty sending unit. i ordered a new sending unit and once it comes in, ill throw it on there and post the results.
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