Start up noise in engine

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Oct 19, 2009 | 12:26 PM

TY'Z Vette

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Instructor

Joined: Jul 2008

Posts: 135

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From: Phoenix, AZ

Start up noise in engine

When i start the engine... most of the time i hear the engine rattle for a second or two then the oil circulates and sound normal.... until it gets hot!

When the temperature gets high like 210 plus.. the engine sounds loose and clacks a bit, like the start up.

The oil pressure seems good... cold start like 40-42 and when its hot like 26-28 both at idle..

The car only has 18500 miles on it and i change the oil every 3K.. (Mobil One) Synthetic..the oil in it now is about 500 miles old

Does anyone notice the same type of situation or should i take it to the dealer....

Thx Ty

Oct 19, 2009 | 12:48 PM

0SicMSP - Daniel

Former Vendor

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From: SoCal Ca.

good question, may want to post it in the Tech Section.

Oct 19, 2009 | 12:58 PM

TY'Z Vette

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Instructor

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From: Phoenix, AZ

Ok... looks like dealer time

Oct 21, 2009 | 03:03 AM

2006c6keller

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From: Dalllas/Ft Worth Area TX

???

Some Vettes are noisy for awhile on start up and then it goes away, like a lifter or piston slap.

Last edited by 2006c6keller; Oct 21, 2009 at 03:58 PM.

Oct 21, 2009 | 04:13 AM

JSB2008

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From: Chicago Burbs IL

A bit of clatter on start up is usually normal. What you might have is a clogged injector that can cause the knock when hot sound. Take it in have the dealer look at it.

Oct 21, 2009 | 04:26 AM

07c6vette

Drifting

Joined: Nov 2006

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From: Oahu HI

Quote:

Originally Posted by 2006c6keller

Some Vettes are noisy for awhile on start up and then it goes away, like a lifter.

once warmed up, it's gone

Oct 21, 2009 | 04:01 PM

2006c6keller

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From: Dalllas/Ft Worth Area TX

Also possible piston slap!

Quote:

Originally Posted by 07c6vette

once warmed up, it's gone

I expanded my post by adding piston slap in addition to lifter. Post #4.

Oct 21, 2009 | 05:35 PM

Vinnie T

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From: Elk Grove CA

What brand of oil filter are you using? Frams are notorious for bypass valve leakage when the engine is off and losing pressure. Had a 5.0 Mustang once upon a time that did this on startup. It was totally gone after changing brands of filters and have never ever gone back to a Fram. The ominous part of your story is the hi-temp noise which sound like something with excessive clearance.