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'01 Cobra valve-clatter on start-up


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#1 OFFLINE   68fastback

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Posted 23 September 2006 - 07:13 PM

On the '01 Cobra, has anyone heard valve clatter for 1 second or so on cold start-up --shorter if warm. Dealer says it's normal. Two others I've heard are similar, but I'm still wondering if it's a problem or truly 'normal.'

Anyone hear this?

-Dan

Edited by 68fastback, 03 March 2007 - 06:40 PM.


"There's no magic involved in racing, just science and physics." --Austin Coil, Force Racing head crew-chief

"Any sufficiently advanced technology is indistinguishable from magic." --Arthur C. Clark, noted author and futurist

"Any intelligent fool can make things bigger and more complex. It takes a touch of genius and a lot of courage to move in the opposite direction." --Albert Einstein

"I'm not going to take this defeatist attitude and listen to all this crap any more from all these people who have nothing except doomsday to predict." --Carroll Hall Shelby

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#2 OFFLINE   68fastback

68fastback

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Posted 03 December 2006 - 07:54 PM

.

Guess not!

:baby:

Ooo weee.... quiet in here :boring:

<lol>

Edited by 68fastback, 03 March 2007 - 06:42 PM.


"There's no magic involved in racing, just science and physics." --Austin Coil, Force Racing head crew-chief

"Any sufficiently advanced technology is indistinguishable from magic." --Arthur C. Clark, noted author and futurist

"Any intelligent fool can make things bigger and more complex. It takes a touch of genius and a lot of courage to move in the opposite direction." --Albert Einstein

"I'm not going to take this defeatist attitude and listen to all this crap any more from all these people who have nothing except doomsday to predict." --Carroll Hall Shelby

"I am looking for a lot of men who have an infinite capacity to not know what can't be done." --Henry Ford

"Your worth consists in what you are and not in what you have." --Thomas Alva Edison

"One man with courage is a majority." --Thomas Jefferson



#3 OFFLINE   68fastback

68fastback

    Need DOHC alloy big-block!

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  • 12,094 posts
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Posted 12 April 2007 - 06:12 PM

Update: with 35K mi, it clatters longer when cold (a few seconds) and there's also a quieter sound, almost like when letting out a clutch, that lasts for a good 30 seconds when cold then slowly fades away. Dealer says no problem found -- normal!

Anyone have this?


"There's no magic involved in racing, just science and physics." --Austin Coil, Force Racing head crew-chief

"Any sufficiently advanced technology is indistinguishable from magic." --Arthur C. Clark, noted author and futurist

"Any intelligent fool can make things bigger and more complex. It takes a touch of genius and a lot of courage to move in the opposite direction." --Albert Einstein

"I'm not going to take this defeatist attitude and listen to all this crap any more from all these people who have nothing except doomsday to predict." --Carroll Hall Shelby

"I am looking for a lot of men who have an infinite capacity to not know what can't be done." --Henry Ford

"Your worth consists in what you are and not in what you have." --Thomas Alva Edison

"One man with courage is a majority." --Thomas Jefferson



#4 OFFLINE   Pig

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Posted 10 August 2007 - 06:55 PM

Update: with 35K mi, it clatters longer when cold (a few seconds) and there's also a quieter sound, almost like when letting out a clutch, that lasts for a good 30 seconds when cold then slowly fades away. Dealer says no problem found -- normal!

Anyone have this?

I've got it on my 96. The 4v 4.6's seem to be notorious for engine ticking, especially when cold. I think its the lifters? That's what I've been told anyways. Does it go away after the car warms up? Does the "clatter" speed vary w/rpm? I've heard using a heavier weight oil will help, but I haven't tried. I use Mobil1 5w30 synthetic and it still does it when cold, but goes away after warming up.
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