4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

Name this Noise

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Old 04-09-2010, 05:25 PM
  #1  
laddanator
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Cool Name this Noise

This is my 98 Cobra..68,000 miles. I know its not the timing chain, just replaced the whole setup, not lash adjusters, replaced all 32, not the exhaust, had it checked by two diff companies, not pistion, wristpin, or bearings, compression tested fine and the noise goes away with alittle push on the gas(if it was pistons..etc it wouldnt go away with acceleration it would get louder), replaced spark plugs and wires. Sounds like its coming from the driver side around the egr valve but I cant see or feel a leak. This is from my cell phone..the best I could do for now.

http://www.youtube.com/watch?v=heAZunzQRZk

Last edited by laddanator; 04-09-2010 at 05:31 PM.
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Old 04-09-2010, 10:57 PM
  #2  
Stevecooper
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Default

Originally Posted by laddanator
This is my 98 Cobra..68,000 miles. I know its not the timing chain, just replaced the whole setup, not lash adjusters, replaced all 32, not the exhaust, had it checked by two diff companies, not pistion, wristpin, or bearings, compression tested fine and the noise goes away with alittle push on the gas(if it was pistons..etc it wouldnt go away with acceleration it would get louder), replaced spark plugs and wires. Sounds like its coming from the driver side around the egr valve but I cant see or feel a leak. This is from my cell phone..the best I could do for now.

http://www.youtube.com/watch?v=heAZunzQRZk
if you think its coming from the EGR valve unplug the vacuum line from the EGR and see if it stops.
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Old 04-10-2010, 09:43 PM
  #3  
laddanator
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Default Good Idea

Originally Posted by Stevecooper
if you think its coming from the EGR valve unplug the vacuum line from the EGR and see if it stops.

I will give that a try and report back. Thanks for the idea
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