Dirty Exhaust Tips - Page 2 - Audi Forum - Audi Forums for the A4, S4, TT, A3, A6 and more!

Oct 20, 2009 | 02:08 PM

#11

wanthema

Audi Forum - Posts like an S4

Joined: Jan 2009

Posts: 279

From: Markham

Re: Dirty Exhaust Tips

91 shell most of the time, 94 sunoco once after three times of 91. Keeps tank clean and challenge the ecu so it keeps adjusting to perform better. Why what's up?

Oct 20, 2009 | 02:19 PM

#12

rusty_67

Audi Forum - Posts like an S4

iTrader: (1)

Joined: Jan 2008

Posts: 230

From: Kelowna (West)

Re: Dirty Exhaust Tips

Quote:

Originally Posted by circularduck

I'm not sure if this is an issue or not. I've noticed that the tips of my exhaust get a black "soot" fairly quickly. I noticed that there were streaks on the ground below the exhausts on my garage floor. I asked the dealership and they said it's normal for water to mix with the carbon and that's what caused the stains. I had the car washed 2 days ago and have driven about 20 km since and the exhausts are completely dirty again. Is this normal?

The question was a response to the original post. A lower grade can cause the car to run richer than normal causing sooty pipes.

Oct 20, 2009 | 03:29 PM

#13

circularduck

Thread Starter

Audi Forum - Posts like an A1

Joined: Sep 2009

Posts: 9

From: Kitchener

Re: Dirty Exhaust Tips

I run Shell V-Power. I've cleaned the exhaust again to monitor the situation, it doesn't seem as bad as it was. Since I bought the car used, maybe the person before me wasn't using the best fuel. I'm going to also try a fuel system cleaner next fill-up, just in case.

Oct 20, 2009 | 05:16 PM

#14

wanthema

Audi Forum - Posts like an S4

Joined: Jan 2009

Posts: 279

From: Markham

Re: Dirty Exhaust Tips

Use seafoam to put in your tank. Helps clean up junk in your fuel tank. Make sure tank is full of fuel first. Also to further clean ur engine, before u go to change oil, put a can of seafoam in as well. Works wonders!!