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      10-08-2019, 11:56 PM   #1
Aliquantus
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Strange exhaust noise at startup

I’ve got the N20 and sometimes when I start it, it sounds like an exhaust leak under the car, but sometimes it’s quiet. Either way, it goes away in a few seconds. I’ve been under the car a few times and don’t see any signs of a leak anywhere. Could the exhaust valve on the muffler cause something like this?
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      11-01-2019, 08:41 AM   #2
mad1stgen
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Waste gate startup rattle. Normal N20 sound.
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      11-17-2019, 01:50 PM   #3
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Quote:
Originally Posted by mad1stgen View Post
Waste gate startup rattle. Normal N20 sound.
Hi, it’s not wastegate rattle (that seems to effect the twin turbo 3litre engines, not the 4 pots)
It’s emissions related, that’s why it goes away as the engine warms up
Rob
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      11-20-2019, 04:25 PM   #4
Aliquantus
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Quote:
Originally Posted by smartbear View Post
Hi, it’s not wastegate rattle (that seems to effect the twin turbo 3litre engines, not the 4 pots)
It’s emissions related, that’s why it goes away as the engine warms up
Rob
It doesn't sound like a rattle although it seems to come right from the same area. It does sound like a bad exhaust manifold gasket.
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      11-20-2019, 04:26 PM   #5
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Quote:
Originally Posted by mad1stgen View Post
Waste gate startup rattle. Normal N20 sound.
I'll try isolating the wastegate rod and see if that helps. Thanks.
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