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Old 10-21-2013, 02:23 PM
Join Date: Apr 2013
Location: MN
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Toneaero is on a distinguished road
What does this look like to you? Pic inside

Bad injectors? Winter gas? Just plain dirty car?

Its not black smoke but black soot like substance all over the bumper. A b*tch to clean too.

If its the bad injectors that i've been fearing, how much will this hurt my checkbook?

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Old 10-21-2013, 02:26 PM
e30cabrio's Avatar
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My 350Z did something similar and it was oil control rings.
BMWCCA # 480346

'72 e6Tii rip
'90 e30iC sold
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Old 10-21-2013, 07:15 PM
ard ard is offline
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without diagnostics, it is impossible to say what's wrong- much less give you a price!

You want to hook it up to a diagnostic computer and look at fuel trims (long and short term) as well as air flows, temperatures (intake, coolant, oil, etc) timing afdvance, etc.

If a sensor is bad and the car is running rich, you will see the DME trying to compensate (and failing, but not enough to trip a CEL)...this will point you to what the issue may be. A car with a sluggish VANOS; a car that is running cool and is stuck in 'open loop' control...all possible causes.

No warranty?

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Old 10-21-2013, 09:17 PM
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Not sure what it is because the soot I have is just liquid that falls downwards and doesn't gather all around. Regardless, use liquid clay bar to get it off - anything above the clearcoat layer rubs right off (with a flipflop-on-wet-tile sound effect showing it does get in there good). I use it all the time on my rear aero kit and it's about 5-seconds of effort and leaves no marks. May take you 30 seconds though.

'08 X5 3.0si - Alpine White / Saddle Brown interior
Specs: Sport Pkg, Premium Pkg, Tech Pkg, Comfort Access, Aero Kit, Style 433 staggered 20s on Conti DWS
Mods: Carbon 35 tint, LED angel eyes, GP Thunder 7500k fogs, H&R 20mm/25mm spacers, clear reflectors, gunsmoke-tinted taillights
Coded: Digital speedo, windows/sunroof/tailgate close via keyfob

X5 pics at Flickr

Last edited by rh71; 10-21-2013 at 09:24 PM.
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