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07-31-2007, 10:26 PM | #1 |
Drives: '07 liftback Join Date: Oct 2006
Location: CA
Posts: 66
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white residue in exhaust pipe
car is stock, just out of curiousity i looked into the exhaust pipe and saw some white residue stuck to the inside. at first i thought some idiot stuck some plastic bags or something inside to fcuk around but when i tried to scrape it off it was powdery. any idea what it could be, maybe its just a by-product of the exhaust gases?
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08-01-2007, 12:21 AM | #2 |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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you need to stop stashing your dope in your intake, it will get sucked in to your motor and blown out your exhaust....
was there a lot.... or just a little, can you take a picture? sounds like it may just be a bit of excesive carbon, maybe form using shitty gas?
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08-01-2007, 12:30 AM | #3 |
Drives: '07 liftback Join Date: Oct 2006
Location: CA
Posts: 66
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not much residue, but enough to see from the back. chevron and shell must be shitty gas.
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08-01-2007, 12:54 AM | #4 |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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well I always you shell, and only shell.... so that is not your problem, but I use premium 75% of the time..... but my car's intake and Exhaust are nowhere near stock.... we do not have chevron here, so I do not know..... could just be the California gas.... I hear there is some weird stuff in there, I had a couple buddied buy some cars from there recently and they were tuned to California gas.... they had to be retuned to standard 93 octane
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09-19-2007, 09:56 PM | #5 |
Drives: 2008 yaris 3d Join Date: Sep 2007
Location: san diego
Posts: 4
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White residue in the cylinders is usually found on the spark plugs, and is from detergents in the gas that help keep you system clean. Never heard of it coming out of the tailpipe though.
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09-19-2007, 10:14 PM | #6 |
Steals terrorist's lunch
Drives: 2007 Yaris Liftback Join Date: Mar 2007
Location: Reno, Nevada, USA
Posts: 1,299
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yuiedie, do you drive the car hard? If so the powder is from gelled and dried fuel additives that didn't have a chance to burn off in the cylinders during high RPMs. It's a sign that you need to slow down.
If not you need to take the car in to the dealership to have the catalytic converter inspected because the powder is likely ceramic dust from a failing or failed component in there.
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09-19-2007, 10:23 PM | #7 | |
der Zeck
Drives: '05 Audi A4 1.8t quattro Join Date: Sep 2006
Location: Toledo, OH
Posts: 5,231
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Quote:
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09-21-2007, 07:17 PM | #8 |
Drives: 2008 Yaris HB Join Date: Sep 2007
Location: south bay.
Posts: 14
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lol.. white residue
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