knock knock

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10-20-2008 | 10:16 AM

951mcomm

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Instructor

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From: L.I. New York

knock knock

anyone hear this sound when the motor is cold. it lasts for only a minute right after start up then disappears completely, even after restart while warm. thoughts??

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10-20-2008 | 11:53 AM

Jeremy Himsel

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From: Phoenix, AZ - NJ Runaway

It's the lifters pumping up.

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10-20-2008 | 11:56 AM

951mcomm

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Instructor

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From: L.I. New York

so this is normal???
i hear it on one of my cars not the other

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10-20-2008 | 11:58 AM

reno808

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From: In the garage trying to keep boost down

whos there?

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10-20-2008 | 12:08 PM

blown 944

Race Car

Joined: Jul 2007

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From: Firestone, Colorado

Nice avi there Reno

it is normal for older enginees to have lifter that will bleed down when sitting. If you want to cure it just install some new lifters

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10-20-2008 | 12:20 PM

reno808

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From: In the garage trying to keep boost down

Quote:

Originally Posted by blown 944

Nice avi there Reno

it is normal for older enginees to have lifter that will bleed down when sitting. If you want to cure it just install some new lifters

THanks its a CEP Fuel Rail