Hi guys i have a a3 running revo stage 2.5 and have recently fitted a decat pipe and since doing this it smokes quite bad on idle not blue smoke/oil just smells normal. any ideas wat can be causing this thanks
A3 20vt quattro smoky idle
- Thread starter quattro rob
- Start date
- Joined
- Oct 27, 2006
- Messages
- 2,851
- Reaction score
- 110
- Points
- 63
Did you have the post cat lambda sensor turned off?
If you didnt that may be the problem. Failing that i would get the car logged and checked with vag com.
A cat will hide a few things... worn engine parts being one of them.
If you didnt that may be the problem. Failing that i would get the car logged and checked with vag com.
A cat will hide a few things... worn engine parts being one of them.
Are you sure it's smoke and not just condensation? Bear in mind you have no cat in there now - extra condensation is common.
- Joined
- May 28, 2004
- Messages
- 10,217
- Reaction score
- 2,385
- Points
- 113
- Location
- nr Glos
- Website
- www.badger5.co.uk
turbo... tired.. and or exhaust valve guides/stem seals
change of backpressure on the seals without cat now can it seems draw oil out
how oiley are your charge pipes?
change of backpressure on the seals without cat now can it seems draw oil out
how oiley are your charge pipes?
Charge pipes have small amounts of oil, turbo was rebuild only 12k ago but it does have a hard life so maybe it time for second rebuild, or hybrid time 
if it still smokes be stem seals I guess, thanks for replys.
if it still smokes be stem seals I guess, thanks for replys.
