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Noise that will not go away

 
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  #1 (permalink)  
Old 20 Sep 2011, 08:33 pm
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Default Noise that will not go away

The engine has 75 miles on it after the rebuild. I get a noise during acceleration that can be heard when I give the car some gas. It is present in park or Drive.

Car drives fine but I suspect that it may have some kind of exhaust leak. Almost sounds like my old go-cart.

What could this be? I did have a cracked exhaust manifold and replaced it last week. Also replaced EGR gaskets. All parts are tight and I do not feel any leaks there.



The video is not the best but you can here the noise.
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Old 20 Sep 2011, 09:30 pm
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Default Re: Noise that will not go away

Have you checked the flexible part of the exhaust, between the cat and the manifold
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Old 20 Sep 2011, 09:49 pm
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Default Re: Noise that will not go away

I noticed that it had a small bit of free play while I was moving the tubing to instal the new manifold. It was only a small amount and could barely be pushed with my hands, I will try to check it tomorrow evening.

Thanks
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Old 20 Sep 2011, 09:53 pm
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Default Re: Noise that will not go away

Quote:
Originally Posted by shadowsnkx View Post
I noticed that it had a small bit of free play while I was moving the tubing to instal the new manifold. It was only a small amount and could barely be pushed with my hands, I will try to check it tomorrow evening.

Thanks
My wife's 01 was leaking from there and had to change it.
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Old 20 Sep 2011, 10:18 pm
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Default Re: Noise that will not go away

I'll put it up on ramps tomorrow and see if I can feel a leak there. Thanks again.
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Old 21 Sep 2011, 03:50 am
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Default Re: Noise that will not go away

Sounds more like a leak on the intake side to me ... if you mean the pffffftt sound when you press the pedal? Maybe check the airbox is tight and actually has a filter in there...
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Old 28 Sep 2011, 09:06 pm
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Default Re: Noise that will not go away

Quote:
Originally Posted by Arthur View Post
Sounds more like a leak on the intake side to me ... if you mean the pffffftt sound when you press the pedal? Maybe check the airbox is tight and actually has a filter in there...
I cannot tighten the intake more than it already is. I used new gaskets and do not see a twist in them, the intake manifold does not look cracked. There is a filter in my airbox.....
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Old 28 Sep 2011, 09:09 pm
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Default Re: Noise that will not go away

Quote:
Originally Posted by XtrmDC2 View Post
My wife's 01 was leaking from there and had to change it.
I put her up on ramps this evening and started the car. After I got under the car I flexed the exhaust pipe and could not tell a difference. I also places some paper around the flex adapter to see if anything was leaking out.

I found nothing. Maybe i'll run it by an exhaust shop Saturday, problem being that the closest one is 35 miles away.....should I drive it there or just go ahead and replace the pipe?

Where is the best place to get the pipe at a low cost? Ebay only seems to have the pipes for turbos.
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Old 01 Oct 2011, 02:36 pm
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Default SOLVED Re: Noise that will not go away

The EGR valve was not tight enough. I installed a new gasket and tighened it. Issue solved.
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Old 01 Oct 2011, 03:06 pm
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Default Re: Noise that will not go away

Thanks for getting back.
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