2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 engine

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ROUGH IDLE

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Old

Sep 2, 2010 | 08:49 AM

#1

jkarne

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From: San Diego ca

ROUGH IDLE

I changed the spark plugs in my truck a while back, and when i did so i used the champion spark plugs not the origianl motorcraft ones. I now am noticing the truck idles rough sometimes when i pull up to stop lights or what have you. could it have anything to do with the new plugs? I didn't change the coils or the boots.

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Old

Sep 2, 2010 | 06:37 PM

#2

Coskid

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From: Henrico, VA

I doubt its the plugs unless one is defective. Most likely its the coils, boots, or your fuel filter.

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Old

Sep 3, 2010 | 08:35 AM

#3

jkarne

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From: San Diego ca

i have already changed the fule filter and your right about the plugs. Isnt there a problem with the original boots not fitting over the plugs or something?

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