10-18-2012, 12:11 AM | #1 |
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Anyone experienced this Problem - Black soot from 328i exhaust?
Hi all
I bought from New 328i 6MT built Jan 2012. Driven over 6000Klms. Having black soot coming out of exhaust and onto paint work, extremely visible near exhaust pipes but covering most of rear bumper / boot with finer particles. I have been using Premium High Octane RON 98 petrol since 1st day and I never run petrol tank under a quarter full. I have also tried to isolate the problem by using 5 different petrol suppliers with always same result. Power seems OK but not sure actual performance as I have never driven another 328i. I also had Computer replaced about 3 months ago as car had to returned back to dealership due to computer malfunction. My BMW dealership have looked into the problem with no solution and are awaiting an inspection from BMW Australia Head Office. I have attached pictures below and appreciate anyone's feedback and assistance Thanks William Last edited by wvoz; 10-18-2012 at 12:18 AM.. Reason: clarify |
10-18-2012, 03:01 AM | #2 |
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Woah, that looks pretty bad!
Check Engine Light on at all?
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10-18-2012, 03:12 AM | #3 | |
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10-18-2012, 05:41 AM | #7 | |
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10-18-2012, 06:01 AM | #8 | ||
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10-18-2012, 07:11 AM | #9 |
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I've had this as well and it's reduced a lot over the past 3000km. I thought it was just the exhaust wearing in and the fact I have Mineral White paint just means it shows up more. Certainly performance isn't an issue.
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10-20-2012, 09:28 AM | #10 |
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I had the same problem at first too, went away after a while.
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10-22-2012, 03:43 PM | #12 |
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Just an heads up that there are similar reports from AW 1-series drivers: http://f20.1addicts.com/forums/showthread.php?t=739305
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10-22-2012, 04:29 PM | #13 | |
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Some soot is to be expected but it's what looks like globs that would bother me. Even without a catalytic converter I have not seen this before.
The post below seems a pretty good explanation. OP, out of curiosity, do you rev up the motor when first starting? I typically warm mine up before driving, maybe why I don't get the globs? Quote:
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10-23-2012, 04:34 AM | #14 |
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My problem started after I completed the run in stage. I usually start the car and proceed to drive off slowly without revving over 3500 until engine has reached correct driving temperature. Car is always garaged and or undercover at work. If I'm racing the engine I deactivate the auto start stop to allow the engine to naturally cool the turbos. Problem does not seem to be getting any better over the last 4000 klms. I am interested to see if anyone who has had the same problem has had it solved.
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10-23-2012, 05:22 AM | #15 | |
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10-23-2012, 05:28 AM | #16 | |
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I accept "recently" is a relative term too. Checked with a mate of mine at the office who has a Melbourne Red 328i Sport line and he noticed it also. After I clean the car this weekend I was going to try and run it for a week with the ASS function turned off, as I wonder if it's being caused by gases cooling and the carbon building up before being suddenly ejected out, giving the "explosive carbon diarrhoea" we're seeing. It's a wild guess based on no fact whatsoever, but I'm up for some speculation It's certainly unusual. |
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10-23-2012, 12:53 PM | #17 |
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Very interesting. I will also try the same. Seems logical as when I was running in, and didn't seem to have the problem, I usually did engaged the ASS. Thanks for the suggestion.
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10-25-2012, 08:35 AM | #18 |
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I would think that the exhaust flap thing is the biggest problem here; when closed, on the lower revs, the exhausts get trapped behind it and if the engine doesnt get heated or revved enough these extra trapped fumes eventually cool off there, condensating. Meaning u get a lot of water build up there. Next time u rev enough for the flap to open u get that nice sludge spray painted on the bumper.
Golf Tee mod it is
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10-25-2012, 03:30 PM | #19 | |
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Looking at the OP's photos, it seems to be spraying more from the right/inside exhaust port. Is that the one with the flap? |
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10-26-2012, 03:52 AM | #20 | |
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Some might say overkill, but mine isnīt a lease like most of u guys have. Plan to keep it at least this generation out, and I drive around 50k miles a year so... yeah, I care
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Dec. 2022: Fully loaded Carbon Black G08 iX3 LCI M Sport Pro
Former: Glacier Ag. F31 328iA RWD M Sport oct. 2012, sold July 2022 | Sport Automatic | Adap. M Susp. | Pano. Moonroof | 20" ATS Racelight Grey w. Michelin PSS| M Sport brakes | Harman Kardon | Elec. Seats | PDC F&R | ACC Stop&Go | 335i MPE | Perf. Parts | |
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11-05-2012, 06:53 PM | #21 | |
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Tried 1 week of driving (approx 300 klms) with Auto Start Stop function disengaged. I have noticed the problem of black soot coming out of the exhaust onto the body work reduce but not completely eliminated. I am interested to see if other 328i owners are experiencing this problem or is it only isolated to mine. Any feedback from other owners will be very helpful as dealership claims that this is normal especially on WHITE cars. Thanks |
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11-05-2012, 07:21 PM | #22 |
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same issue with mine. was told it was normal. took it out with goof off and waxed it back up. i clean it up every time i wash the car. the build up is not that much if you take it out every few hundred miles or so. i'm having an issue polishing up my tailpipes though.
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