Knocking noise coming from engine

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May 24, 2006 | 10:28 AM

Ford5726

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Knocking noise coming from engine

I have a 04 5.4l and at idle I hear a really loud knocking noise coming from the engine. I went to Autozone and they said it may be that I am running too thin of oil, I am running 5w20. Does anyone have any suggestions?

May 24, 2006 | 12:15 PM

FS-150

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From: Michigan

Quote:

Originally Posted by Ford5726

Do you hear the noise only at idle?

May 24, 2006 | 12:29 PM

pjbonthebeach

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The noise is likely the Cam Phasers (Left and Right). The TSB is 06-4-7 and, if not covered by warranty, costs $1,122 to correct. In effect, they are replacing both camshaft gears. If you are not covered by the warranty, I would not have it done. I got mine in just under the 36K limit.

May 24, 2006 | 12:52 PM

KevinM

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Knocking noise could be the cam phaser problem as per TSB 06-4-07. The oil should not be the problem!

May 24, 2006 | 01:14 PM

The Oldtimer

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From: Escondido, Ca

I have a noise like that from time to time, not very often, only at idle when my truck is in gear. If I put it into neutral or step on the gas, it goes away. Could that be the same thing?

May 24, 2006 | 01:45 PM

pjbonthebeach

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Mine showed up all the time but was subdued when warm. The problem made my truck sound like it had a diesel (albeit quieter), especially when initiating a slow acceleration while cold.