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5.4 missfire

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Old 09-10-2013, 01:05 PM
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I was jus fixing to suggest head or head gasket because my moms car did the same thing and she had a blown head gasket
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Old 09-10-2013, 03:08 PM
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Originally Posted by Drop Tine
I found out what the missfiring was caused by. My engine has a cracked head
Any theory on how it cracked? Valve train malfunction or just metal fatigue?
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Old 09-10-2013, 03:21 PM
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Originally Posted by primalurges

Any theory on how it cracked? Valve train malfunction or just metal fatigue?
What I think it is when it went to the dealership a lot they probably took the plugs out when it was hot and somehow messed it up
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Old 09-10-2013, 09:20 PM
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Originally Posted by Drop Tine
What I think it is when it went to the dealership a lot they probably took the plugs out when it was hot and somehow messed it up
Where your misfires jumping from bank to bank? Make sure that's the only problem, I would think the misfire would stay on the bank of the cracked head.
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