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Old 02-20-2010, 09:25 PM
Junior Member
Join Date: Feb 2010
Posts: 4
2001 5.4, 6&7 Cylinder Misfire

Hey All! Was wondering if anyone could help me out? I've got a Cyl 6 and 7 misfire. I took the coil and spark plug out for both and noticed that the plug was full of dirt and some water. I cleaned the plugs with brake cleaner (cause i just put them in bout 6 months ago) and cleaned the coils. I put them back in and started the truck, and it did well for a bit....then the same thing. Anyone have an idea of what it is? I'm thinking new coils, but I don't know. I've been told that the Fords have a roadspray issue with the plugs (thanks to design). Any help is greatly appreciated! Oh, one more thing.......if it's the coils, aftermarket or stick with oem? THANKS!
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Old 02-21-2010, 02:56 AM
glc glc is offline
Senior Member
Join Date: Dec 2006
Location: Joplin MO
Vehicle: 2003 Ford F150
Posts: 28,511
Use only Motorcraft plugs. Get a set of coils from Ebay:

2003 F-150 XL RCSB 2wd 4.2 M5OD 3.55 LS
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Old 02-21-2010, 02:56 AM


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