Is it too new or too rich.

[Jeff Williams]

Hi all,
I need some advice about all the black soot that is covering the tail light and license plate. The dealer said all S have this problem but I look at this statement with a jauntice eye. It seems to me that the bike is running too rich. Is it because it is not broken in,(3000 miles), and only gets 34mpg,(heavy hand), or could their be something not right in the adjustment of the injectors. The only mods to the bikes drivetrain have been to remove the charcoal can and a SJ induct system. What say you group, am I being to anal, or do I have a problem,(with the bike that is).
Thanks,
Jeff

ps I just got my first ticket on the bike. 95 in a 55. He wrote it up as 75 in a 65. He took pity on me and he liked my bike. He said he was glad that I slowed down so he could catch me. I didn't want to tell him that his radio is faster than my bike. Jeff

"Speed Kills"- Anphedamine Annie-Canned Heat

[roger albert]

Too Anal.

There is no adjustment for the injectors (though the tps can have an effect) Your rings aren't seated yet and it does sound like a pretty heavy throttle hand. Together, you can expect a sooty exhaust. These guys seem to do that a bit even when broken in.

Anyway, it's been on many threads, but a stock S is not running rich over any significant portion of its operating range. One with a low restriction exhaust even less so.

roger

[johnnydanger]

I think it's a little of both, mixture and not being broken in yet. My sootyness definitely got markedly less after the bike stopped burning so much oil at around 9,000 miles.

I wouldn't be too worried about it, and rest assured it will get better soon.

[doberman]

Thats exactly what was wrong with mine.
Took to another dealer, not BMW because they could not fix it.
He synchronized the throttles, and then it was fixed. Never had a problem since. BMW tried for a whole year, but they could not fix it. The computer did not tell them what was wrong I guess.
But take it to a non BMW dealer, they can fix it.

[RBMann]

Mine still does it at 25,000 miles. I always figured that it was moisture collecting in the exhaust system at startup. Also living in a cool moist climate does not help.

RB

[rob_wijhenke]

Doberman, BMW dealer could not sync the bodies? They should be closed cause syncing is easy, do it myself every 1000 km's, simple 5 minute job.

And I can't imagine syncing solves the problem unles one screw is completely turned in and the other out. Or at least way off since the bike doesn't run at all or very very poor if they're too far off!

[Jeff Williams]

Thanks all,
I'll sync the bodies and live with lighten up on the right hand until it is needed,(maybe it will stop if I put the throdle on the left, :0) hehe). I assume a mercury stick,(mercometer?) will work.
Roger,
I'll work on that anal thing, thanks for the insight.
Rob,
It would be easier to win the lottery than download the manuel you have. I looked at how many hits your sight has had, wow, in the millions. You are doing great, keep up the good work. If BMW was smart they would put you on their payroll. :=)

Jeff

"Their ain't no cure for the summertime blues"-Summertime Blues-Edie Cochren

[BMW Atlanta]

My experience says the more right hand you use(particularly in the break in phase) the less oil your bike will burn. Are you perhaps using alot of throttle but not turning the RPM's the bike likes to spin???? Do you downshift and let the motor do the braking? It is my opinion if you follow the BMW recommendations on breaking in the bike that it will virtually never break in correctly. You have to remember that lawyers are paid to look after BMW's interests in writing and/or approving these manuals. It wouldnt look good in court when a brand new rider wraps his bike around a telephone pole at 100 miles on the odometer cause he was flogging the motor like I probably would be. Therefore if you maintain the 4k rpm limit its very hard to do something that drastic,......get my drift? Unfortunately if the bike is burning oil there is not much warranty will do unless its excessive comsumption. If you are a really good guy and have a good relationship with your dealer, they may be able to pull the heads and inspect the cylinder walls to inspect for glazing. However if they dont find glazing, be prepared to pay for a few hours labor,......its only fair. That will address your concerns and put the issue to rest. If in the event they do find cylinder glazing, they can lightly hone and reinstall everything perhaps under warranty and off you go to run in the bike the right way. I find this to be the cause on some of our customers bikes. Same issue on my Girlfriends GS. Took it in on trade with 15k and it had been babied its whole life. It was burning oil, but not what BMW standards would say is excessive. So we deglazed the cylinders and even replaced the rings(not necessary, but what the hey) some new head gaskets and de-carboning and its better then new and not burning any oil.

[Olaf]

This might not be the case but I had the same problem. At the 3000 mile service they could not sync the TB's and lots of carbon. The 02 sensor was bad. They replaced it and synced the TB and all is love now.

PS: Broken in hard and NO OIL consumption!

Olaf

[Flatbutt1]

My cans ran sooty for several thousand as well. Consumption wasn't extreme and I had no surging at all. At 10K now and soot is minimal.

[Jeff Williams]

Bob,
It is my nature to ride bikes hard. At 200 miles I started lite high end burst. At 450 I did a track day on the back roads. I haven't stop yet. I like to keep the bike arround 5-7k in the corners and do down shift into the corners, you know normal riding. I agree with you that hard breakins = less oil consumption and better preformance. Bob thanks for the tip on the sensor for the final drive. I'm leaning toward a 3.00 gear.

Olaf,
I may pull the sensor and see if it changes how the bike runs. I assume that their should not be a change in the bike if it is bad.

Flatbutt,
I don't have the surging so I hope the bike follows your bike. Great name but is it painful? :>)

thanks all
Jeff

"Good night Irene"- The Weavers

[Flatbutt1]

Jeff
No more pain now that there is a goodly layer of scar tissue!

[Jeff Williams]

Flattbut,
Right on, Right on, Right on
Jeff

"ush gush in the bush",- unkown disco band of the late 70s