Exhaust Carbon - Honda CRZ Forum: Honda CR-Z Hybrid Car Forums

wicked1 · 11-19-2011, 04:02 PM

My tailpipe is black, covered in a relatively thick coat of carbon (inside). I was recently reading that probably means something is wrong.
I checked my oil and it's a light brown and at the correct level, so I don't think it's burning oil or anything.

What do other peoples tailpipes look like?

I should probably mention, my only "mod" is a k&n air filter in the stock airbox.

TinTin · 11-19-2011, 04:14 PM

since carbon and water are byproducts of gasoline engines i wouldn't worry about it. Getting worried your exhaust isn't spotless inside is obscene. You should only be worried if you are getting carbon or oil buildup on your bumper or the back of your car.

kenoshainflames · 11-19-2011, 04:41 PM

this car does run a little rich. the build up is nothing to worry about like tintin said.

northbridge · 11-19-2011, 04:53 PM

absolutely nothing to worry about all of my exhausts had the buildup.

wicked1 · 11-19-2011, 06:22 PM

Thanks!
I'm used to a bit of buildup, or more often a light gray dust sort of build up, but this is black.
I was hoping to get the responses I did, though, and will accept the car runs rich (until next month when it gets tuned to run however I want

)

11-19-2011, 04:02 PM	#1 (permalink)
wicked1 Senior Member Join Date: Sep 2010 Location: Midwest US Posts: 767	Exhaust Carbon My tailpipe is black, covered in a relatively thick coat of carbon (inside). I was recently reading that probably means something is wrong. I checked my oil and it's a light brown and at the correct level, so I don't think it's burning oil or anything. What do other peoples tailpipes look like? I should probably mention, my only "mod" is a k&n air filter in the stock airbox.

11-19-2011, 04:14 PM	#2 (permalink)
TinTin Senior Member Join Date: Nov 2010 Location: Waterloo, Ontario, Canada Posts: 1,369	since carbon and water are byproducts of gasoline engines i wouldn't worry about it. Getting worried your exhaust isn't spotless inside is obscene. You should only be worried if you are getting carbon or oil buildup on your bumper or the back of your car. __________________

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

11-19-2011, 04:41 PM	#3 (permalink)
kenoshainflames Senior Member Join Date: Aug 2010 Location: wisconsin Posts: 933	this car does run a little rich. the build up is nothing to worry about like tintin said.

11-19-2011, 06:22 PM	#5 (permalink)
wicked1 Senior Member Join Date: Sep 2010 Location: Midwest US Posts: 767	Thanks! I'm used to a bit of buildup, or more often a light gray dust sort of build up, but this is black. I was hoping to get the responses I did, though, and will accept the car runs rich (until next month when it gets tuned to run however I want )