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What are the symptoms of a failing spark plug boot>

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Old 03-14-2006, 05:51 PM
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What are the symptoms of a failing spark plug boot>
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Old 03-14-2006, 06:06 PM
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misfires.
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Old 03-14-2006, 06:16 PM
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Default Funny Emre......
Is it a hard cut out like a failed coil of a soft cut out like a fuel cut off by the computer?

Also, is it a consistant miss, or variable?
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Old 03-14-2006, 06:47 PM
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I've got 5 that I replaced for no good reason that I can send ya.
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Old 03-14-2006, 08:06 PM
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Default I just replaced my plugs and it cleared up a bad miss...
(Or at least I think it was the plugs -- it could be a loose wire in the coil pack cover that's now in a better place.)

It was not usually a hard cut out, and it only occured under boost in the higher gears. WOT in 1 or 2 was no problem, but any boost in 5 would cause a stumble.

Visually the plugs that came out looked fine.
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Old 03-15-2006, 08:17 AM
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Scorch marks on the ceramic part of the plug.
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Old 03-15-2006, 12:12 PM
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No scorch marks on the ceramic part of the plug. - Good
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Old 03-15-2006, 12:13 PM
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Already replaced plugs in last 1000 miles
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Old 03-15-2006, 12:14 PM
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Old 03-15-2006, 12:39 PM
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