R50/R53 :: Hatch Talk (2002-2006) Cooper (R50) and Cooper S (R53) hatchback discussion.

R50/53 Exhaust leak getting into cabin / motor sounds like an air compressor

Old Aug 16, 2016 | 05:16 PM
  #1  
tragedybysyntax's Avatar
tragedybysyntax
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Exhaust leak getting into cabin / motor sounds like an air compressor

So I'm trying to find where the exhaust smell is leaking from between my header to cat... behind the motor inbetween the cat it sounds like an air compressor and I feel a little air coming from the back of the block. Does this residue help diagnose at all? lol. I need to do a new head gasket seal anyway... hoping it's just that. I don't see a crack at the cat.
 
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Old Aug 16, 2016 | 05:59 PM
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RB-MINI
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There's a pre-cat up near the head, above the flex joint, and the cat at the bottom. A lot of times the welds at the pre-cat crack. There was a post in the last few weeks of one and how they had a local shop weld it.
 
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Old Aug 16, 2016 | 06:12 PM
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Originally Posted by RB-MINI
There's a pre-cat up near the head, above the flex joint, and the cat at the bottom. A lot of times the welds at the pre-cat crack. There was a post in the last few weeks of one and how they had a local shop weld it.
That's where mine broke after a moron worked on the exhaust.
 
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Old Aug 16, 2016 | 07:23 PM
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I guess the pre cat is actually below the flex joint. Here are a couple of pics from another post.



 
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Old Aug 16, 2016 | 08:02 PM
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tragedybysyntax
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Ahhhhh.....
That could
be it. I have the Stratmosphere cat back system so I wasn't even thinking about after the flex section. I'll jack it up this weekend and scope it
out down there 😁✋🏻
 
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