C CC_GSR93 Well-Known Member Joined Jan 12, 2007 Messages 85 Location Croydon, Melbourne Jun 26, 2010 #1 Whenever I start the GSR after not using it for awhile (say 3 or 4 days) it always spits out black soot from the exhaust. Assume it's unburnt fuel - any ideas what would be causing that?
Whenever I start the GSR after not using it for awhile (say 3 or 4 days) it always spits out black soot from the exhaust. Assume it's unburnt fuel - any ideas what would be causing that?
VR-4Squid Well-Known Member Joined Jan 7, 2007 Messages 615 Location Kapiti New Zealand Jun 26, 2010 #2 It's not unburnt fuel, just soot (carbon) and condensation mixed together. Cars with stock exhausts don't do it because the baffles in the muffler prevent the sooty sludge from making it out the tail pipe.
It's not unburnt fuel, just soot (carbon) and condensation mixed together. Cars with stock exhausts don't do it because the baffles in the muffler prevent the sooty sludge from making it out the tail pipe.
BMGTZ Grumpy old man from the school of hard knocks Joined Mar 9, 2007 Messages 4,555 Location southside of perth WA Jun 26, 2010 #3 Does it have a bit of a cough/splutter and miss a little when it starts? smell fuely? yes.....then check for leaky injector. otherwise the above is probably right
Does it have a bit of a cough/splutter and miss a little when it starts? smell fuely? yes.....then check for leaky injector. otherwise the above is probably right