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Jan 1, 2005 | 02:04 PM

dm1948

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From: parachute co

exhaust

have a 89 with 50,000 miles went out to start it up to charge the
battery after setting for about a month. i noticed black carbon
coming out of the tailpipes,now i have black crap all over the back.
does anyone have any idea what all that black stuff is.there was
pieces of black stuff on the garage floor?

THANKS

Jan 1, 2005 | 02:50 PM

silver & red CE

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From: NW Chicago Suburbs

My guess: running rich, time for a new O2 sensor(s).

Jan 1, 2005 | 03:01 PM

JCAIRE2

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From: High Plains Drifter Fayetteville, AR

Quote:

Originally Posted by silver & red CE

My guess: running rich, time for a new O2 sensor(s).

Jan 1, 2005 | 06:53 PM

Brimis

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From: Woodbridge NJ

Jan 2, 2005 | 03:43 AM

dm1948

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From: parachute co

thanks for the info,another question is there more than one?

Jan 2, 2005 | 09:34 AM

Sam Lam

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From: St. Charles, MO Route 66 Corvette Club

Your 89 only has one O2 sensor and it can be found on the drivers side exhaust pipe. To check or change the sensor, you really need to raise the car and do this from the bottom. If you have the original O2 sensor in the car....it is time for a new one!
SAM

Jan 2, 2005 | 09:49 AM

rick lambert

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From: seattle WA

You MAY want to try some Sea Foam also, great for removing carbon build up. When I've use it (many times) I put 1/2 in fuel tank and suck the other thru vacumn line into engine-I don't put it into motor oil as suggested. You need to keep the RPMs up when doing it and it just might throw a code 32-seems the 02 sensor get a temporary misting. When you're done just disconnect battery and it should clear the code.
Don't get worried about all the smoke you see comming out-it's supposed to, and will clear up. Good Luck.