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03 valvetrain knock

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Old

Oct 30, 2009 | 06:30 AM

#1

mno3fan

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03 valvetrain knock

I have a 03 and drove it Saturday morn. and all was good . Later in the day I started it and a loud knocking is coming from under the drivers side valve cover . A friend told me it sounds like a loose rocker or bad lifter . I only have 66k miles , change the oil religously, 2wd,auto, any help or ideas would be great .

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Old

Oct 30, 2009 | 06:47 AM

#2

redwood

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Joined: Jun 2004

Posts: 747

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From: Pelahatchie, MS

Is it a V6 or V8?

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Old

Oct 30, 2009 | 09:39 PM

#3

mno3fan

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4.6 V8 sorry ,that's pretty important .

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Old

Oct 30, 2009 | 11:55 PM

#4

LxMan1

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Joined: Dec 2001

Posts: 22,436

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From: Louisville,Ky.

Sounds like a cam follower has fell off. Remove the valve cover and have a look around.

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Old

Oct 31, 2009 | 12:19 AM

#5

ole_smokey_88

Senior User

Joined: Jul 2007

Posts: 174

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From: G-VEGAS TN

knock

Maybe the tensioner on the timing chain went bad and the chain is smacking the cover ??

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54, ford, knock, maintenance, train, valve

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