Tailpipe Tip Black Buildup
#1
#4
#5
A wet or oily deposit in the tailpipe is a bad thing, but beyond that, you can't really tell much about the condition of the engine by looking at the color of the tailpipe deposits. It *used* to a be a good indication back in the carbureted/pre-smog days, but if your car has a catalytic converter or air pump, the color of the tailpipe deposits doesn't mean what it used to.
#6
I was under the exact same impression, and my 2011 justa does the exact same thing. Actually, I'm glad you posted this because I've been wondering about this for a while. As a matter of fact, my grandfather even noticed the abundance of buildup on the tailpipe and suggested I get it checked out, which I haven't yet. Also, speaking of the "wet" or "oily" deposit in the tailpipe, I've noticed (and idk if it has anything to do with it being summer and really hot), but after I take a drive, the tip end of the tailpipe does look somewhat wet and/or oily, not just dried on soot. Any thoughts/should I be concerned?
#7
Also, speaking of the "wet" or "oily" deposit in the tailpipe, I've noticed (and idk if it has anything to do with it being summer and really hot), but after I take a drive, the tip end of the tailpipe does look somewhat wet and/or oily, not just dried on soot. Any thoughts/should I be concerned?
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#8
One of the byproducts of the catalytic converter's operation is water vapor (often a bunch of it), so that may be the "wet" you're seeing. Check the tailpipe again a few hours after the drive is over to see if it's still wet. If it's truly an oily deposit, it'll stay wet.
#9
My 2011 Justa has the same black residue on the chrome exhaust extenstion. I agree with the previous responses, you can't get usefull informatin from the tail pipe deposits with the new catalytic converters. I had the same concern with my last car. I drove it for 21 years, averaged over 35 MPG, and got a minimum of 3000 miles before needing a quart of oil. I never saw anything but black in the tail pipe.
2011 Justa, pepper white, sport seats, manual transmission
2011 Justa, pepper white, sport seats, manual transmission
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