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RenoMan · 11-24-2013, 04:09 PM

I ve been driving from van to langley daily and it has been fine. Over the weekend i parked it and was going to drive again. I noticed my rpm was jumping and a trail of black stuff (not oily )on the ground behind the exhaust. Any suggestions to figure this out? is it carbon build up? should i clean with some sort cleaning agent?

my car is 98 prelude
standard.

Thanks people

11-24-2013, 04:09 PM	#1
RenoMan RS controls my life! Join Date: Mar 2008 Location: 604 Posts: 748 Thanked 36 Times in 18 Posts Failed 19 Times in 11 Posts Member's Picture Albums	black stuff from exhaust. I ve been driving from van to langley daily and it has been fine. Over the weekend i parked it and was going to drive again. I noticed my rpm was jumping and a trail of black stuff (not oily )on the ground behind the exhaust. Any suggestions to figure this out? is it carbon build up? should i clean with some sort cleaning agent? my car is 98 prelude standard. Thanks people