Heavy carbon deposits, exhaust pipe

06-19-2005, 12:02 PM

#1

r042wal

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Heavy carbon deposits, exhaust pipe

I have about 5,200 km on 8. I notice heavy carbon deposits at the exhaust. I know the car runs rich, but is this normal? It gets lots of highway miles incidently.

TIA

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06-19-2005, 12:30 PM

#2

StealthTL

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It's called Smoot.....

Try a search on "smoot" :D

S

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06-19-2005, 03:30 PM

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Go48

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Quote:

Originally Posted by r042wal

I have about 5,200 km on 8. I notice heavy carbon deposits at the exhaust. I know the car runs rich, but is this normal? It gets lots of highway miles incidently.

TIA

It's "normal".

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06-19-2005, 08:39 PM

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auzoom

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From a few threads and experience, I run a lower octane fuel and this has disappeared.

Andrew

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06-20-2005, 12:59 PM

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zoom44

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its not just caus eth ecar runs rich. in fact if you drive around without go over certain rpms or throttle positions "like driving on the highway alot in your case) it is almost all from burning oil.

in closed loop the car does a good job at staying at or close to 14.1 afr. that is hardly rich.