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Old Jun 1, 2010 | 06:56 PM
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Exclamation Failure to start after COP replacement

Hey everyone, I recently bought an 05 F-350 and it's been having a misfire. Its previous owner said he had replaced 4 of the COPs, so I went ahead and replaced the other 4 hoping to fix the problem. Unfortunately, now the engine turns but it won't fire up. I removed them again, checked for debris, and put some more dielectric grease on the end of the boot, but it's still having the same problem. I'd appreciate any help as I feel like I'm in a rut now.
 
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Old Jun 1, 2010 | 08:23 PM
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Pull the codes and see what you get. That truck is too complicated to guess what is wrong.
 
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Old Jun 1, 2010 | 09:41 PM
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Unluckily, the CEL doesn't come on.
 
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Old Jun 5, 2010 | 03:14 PM
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CEL doesn't need to come on to get codes..... have the codes read!
 
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