A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

exhaust odor at start -up

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Old 01-31-1999, 10:18 AM
  #1  
Rick
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Default exhaust odor at start -up

I've checked the archives and the FAQ's and cant find this problem mentioned. When I first start my 98 2.8 there is a slight exhaust odor in the car (yes with the windows closed). If I start and back out of the driveway the odor is real strong- it is SOMEWHAT mitigated by shutting off the heater fan before backing or starting.<br>When I mentioned this to the dealer a while back I was told that it is exhaust coming through the heat system. After a few months it sunk in that on a $30000 car the exhaust does NOT/ should NOT leak in. Has anyone else experienced or better yet had this problem fixed? thanks
Old 01-31-1999, 12:38 PM
  #2  
MichaelB
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Default Is it very cold out?

If so, it could be that the engine is running really rich on start up. That would make for a much stronger smelling exhaust.
Old 01-31-1999, 01:20 PM
  #3  
Ricck
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Default not necessarily- main activator seems to be reverse

the problem is year round. though (perhaps unrelated) the first start in the AM requires around 3000 rpm before shifting out of 1st gear- the dealer said that that was normal to allow something to warm up sooner.?..
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