Black exhaust soot on rear bumper - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Black exhaust soot on rear bumper
Posted by STICKMAN (more from STICKMAN) on Fri, 19 Nov 2010 06:35:02
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Noticing accumulation of black soot on rear bumper just above exhaust tip. What would cause that?
Started noticing it after I replaced the exhaust sytem. Installed Saab Sport system (great system, BTW) with original Viggen tip cut/welded on. The tip now ends farther forward... so end is now tucked in about an inch within the bumper cutout.
So... it the black normal and just doesn't accumulate if the tip sticks out farther? Or should it not be happening?
Worn out spark plugs?... turbo?... ideas? Thanks-
posted by 192.206.1...
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