fuel knock?
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Senior User
Joined: Aug 2009
Posts: 117
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From: Cleveland Ga. North Ga.
fuel knock?
2006 F150 5.4 100,000 + just tuned up new plugs [ that was fun! ] new gas filter,air filter ,oil&filter everything motorcraft [old plugs look normal.] After driving truck all day , sometimes at highway speeds you feel a slight skip engine seems to lose a little power. The check engine light will begin to flash. If you take it out of overdrive it straightens out.No codes except once it showed [misfire #4 cylinder] I checked everything out it seemed fine also it has never set that code again. Sometimes when all this occurs there will be a LOUD KNOCK! something like a diesel might make.Any help would be great Thanks.
Thread Starter
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Senior User
Joined: Aug 2009
Posts: 117
Likes: 0
From: Cleveland Ga. North Ga.
Thanks for reply [what is cop] ? sorry this engine is new to me. If you are suggesting that I might have distured something, the engine was doing this before tune up. what is a Cam phaser and what is it's function and is it possible to repair or replace with out a bunch of tools? Thanks again.
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