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2004 - 2008 F150 2004, 2005, 2006, 2007 and 2008 Ford F150's with 5.4 V8, 4.6 V8 or 4.2 V6 engine
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Old 08-12-2014, 08:39 PM
wattsup wattsup is offline
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Has anyone tried Champion 7989 plugs

I want to change plugs in my '06 f150, it has the 5.4l engine, with 86k miles. I believe they are the original plugs.

I was wondering if anyone can give me some feedback on the Champion 7989 plugs?

Which plugs do most of you guys recommend?


thanks
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Old 08-13-2014, 02:00 PM
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My recommendation is if you plan on keeping the truck long enough to change the plugs again consider the Champions. If not use Motorcraft. The Motorcrafts are cheaper and seem to be the best performing in the 5.4 3 valve. I have seen mixed reviews on the Champions some have had great luck with them, others have had to change out some or all due to misfires. The 1 piece design eliminates the breakage issue if you do replace them again though. FWIW I used Motorcraft for my truck.
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Old 08-13-2014, 02:10 PM
wattsup wattsup is offline
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Going back with Motorcraft plugs seems to be what I have been hearing from other sources I have talked to.
Thanks for the advice CB 13. That's probably what I will do too.
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Old 08-15-2014, 02:43 AM
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I installed the Champion 7989 plugs in my '06 FX4 in December 2008. They're still in there and it runs perfect.

I haven't been following this issue much lately, but I think I read something about a redesigned Motorcraft plug that is either welded, or one piece or otherwise made to not separate. If that's true, it would be a lot cheaper way to go than the $12 each I paid for the 7989.
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Old 08-15-2014, 03:26 AM
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The redesigned motorcrafts are still a two piece. They're a double platinum and I have heard the heat range is different to help with the carbon build up.
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Old 08-15-2014, 07:13 AM
wattsup wattsup is offline
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Thanks for the feedback. I will check into the motorcraft plugs. That's probably the way I will go.
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Old 08-15-2014, 07:13 AM
 
 
 
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