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View Full Version : white residue in exhaust pipe

yuiedie
07-31-2007, 11:26 PM
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?
Black Yaris
08-01-2007, 01:21 AM
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?
yuiedie
08-01-2007, 01:30 AM
not much residue, but enough to see from the back. chevron and shell must be shitty gas.
Black Yaris
08-01-2007, 01:54 AM
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
calvin7897
09-19-2007, 10:56 PM
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.
BailOut
09-19-2007, 11:14 PM
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.
Black Yaris
09-19-2007, 11:23 PM
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.

we do have a catalytic converter TSB, but it is for sulfer smell..... posibly related to his issue?
yalease
09-21-2007, 08:17 PM
lol.. white residue