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Oct 6, 2003 | 11:59 PM

400HPHD

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From: somewhere

question...

what does a bad plug feel like?? either a launched or broken tipped plug??

Oct 7, 2003 | 12:13 AM

dirtchicken

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From: Pearl City, Hawaii

You will definately hear a launched plug. There will also be a rough idle and a noticable loss in power.

Oct 7, 2003 | 12:56 AM

promodlightning

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From: South Florida

A bad plug will generally missfire under a load. Put your truck in gear and hold the brake while bringing your RPMs up to about 1000...You should clearly hear the missfire if this is done...

Oct 7, 2003 | 12:59 AM

400HPHD

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From: somewhere

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