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misfire?

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Old Jul 5, 2009 | 08:13 PM
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misfire?
I have a 2002 f-150 FX4 5.4. I checked the codes and it said i have a misfire on cylinder 1&2 under 1000 rpms. Is it the coil packs or something else?
 
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Old Jul 5, 2009 | 09:25 PM
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Could be the COPS. When is the last time you changed the plugs and COPs?
 
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Old Jul 5, 2009 | 09:43 PM
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i just replaced the plugs thinkin that was the problem but i havent done the cops
 
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Old Jul 6, 2009 | 06:02 AM
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Did you use Motorcraft plugs?
 
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Old Jul 6, 2009 | 01:51 PM
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yep i just replaced them all with motorcraft
 
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