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Is F-150 Still King?
 
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Old 10-30-2009, 07:30 AM
mno3fan mno3fan is offline
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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 10-30-2009, 07:47 AM
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Is it a V6 or V8?
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Old 10-30-2009, 10:39 PM
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4.6 V8 sorry ,that's pretty important .
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Old 10-31-2009, 12:55 AM
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Sounds like a cam follower has fell off. Remove the valve cover and have a look around.
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Old 10-31-2009, 01:19 AM
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knock
Maybe the tensioner on the timing chain went bad and the chain is smacking the cover ??
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