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Noise

  #1  
Old 05-26-2015, 06:54 PM
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Join Date: Mar 2014
Location: Nashua NH
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Default Noise

Hello All,

I am wondering if anyone can explain why my 81 C3 sounds kind of like it has an exhaust leak when I first start it? After a couple minutes idling at about 1500-2000 rpm the sound goes away, the car seems to run fine!

Thanks for your input,
Encore
 
  #2  
Old 06-03-2015, 02:55 PM
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During warmup, check your exhaust manifolds for leaks.
Warming the engine may be closing the tollerances and stopping a leak.
 
  #3  
Old 06-06-2015, 03:03 PM
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Default Noise

Thanks C3 Starship, you were right, the exhaust manifold was loose at the #7 cylinder a little at the center port also, I tightened them up and it's like night and day! Evidently just that couple minutes of warm up sealed them up, I never would have thought that in such a short time that would be the case! Thanks again for the tip!

Encore
 
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