tapping noise when cold start

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Dec 2, 2004 | 10:28 PM

nikejr16

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tapping noise when cold start

A buddy of mine has a 2001 SS w/ 60,XXX miles, and also he had some new rings put in under warranty, but anyway my ? is when he does a cold start up its a noticeable tapping noise for a while. When the car warms up it goes away. What could be the problem?

Thanks for looking and shining some light
Joe

Dec 3, 2004 | 12:10 AM

NassyVette

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I think its the lifters. They are hydraulic and the engine needs to run for a while to build pressure. Or something along those lines.

Dec 3, 2004 | 12:17 AM

nikejr16

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Thanks NassyVette I'll let my buddy know.

Dec 3, 2004 | 12:56 AM

luv2spd

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Prob. piston slap.

Dec 3, 2004 | 09:02 AM

NassyVette

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Quote:

Originally Posted by luv2spd

Prob. piston slap.

Wouldn't piston slap be there all the time? If its only on start up I'd bet its the lifters.

Dec 3, 2004 | 11:14 AM

luv2spd

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Piston slap goes away when the motor warms up. The metal expands taking away the gap.

Dec 3, 2004 | 05:00 PM

Clipper

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What kind of oil filter does he use. I've got a pretty bad case of piston slap in my Expedition (I know...it's a Ford...), and depending on the oil filter, it's either barely noticable or VERY apparent. I had always used K & N oil filters, and the piston slap could only be noticed (just barely) on the coldest (sub zero) mornings. I had to buy a Fram UltraGuard whatever in a pinch, and it sounded like my engine was going to destroy itself. Something about crappy ADB valves in Frams....Anyway, back to the K&N, and it's all but gone.

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Dec 3, 2004 | 05:15 PM

nikejr16

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Dam if its really piston slap he is going to be devastated. I hope its just the lifters. Is there a way to check if it is piston slap or lifters. Thanks for the replies guys.