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2004 - 2008 Ford F150 General discussion on the 2004 - 2008 Ford F150 truck.

Clanking/Knocking between 900-1000rpm

Old 03-08-2013, 10:11 AM
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Originally Posted by Evader53
Interesting... Mine is completely silent though on cold starts. It only does this when warm and it does it both under load and neutral.

Worth looking into though. Like I said I'll check the vct solenoids first and go from there.

Any other input from people with knowledge of this issue is greatly appreciated.
Yours is doing what mine used too. When I first started the truck my engine would sound tight and noise free, and then once it got warm, that's when knocking would start. Believe me or not, but again just replacing the solenoids has eliminated probably about 90% of that awful knocking. Put it this way, my injectors are louder now than my engine is. Which is the way it's supposed to be.
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