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wotan
Joined: 01 Oct 2010
Posts: 13
Location: Northants UK
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 Posted: Fri Oct 01, 2010 12:01 pm Post subject: K1100LT running rich |
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Hi,
I am in the UK, Northants, and have just bought a 1997 K1100LT. I was told that it is running rich. It came with some old plugs and they are very sooty.
Any advice on what is the cure - it would be very handy if anyone in my area has any experience of this.
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1986 K75C
1997 K1100LT for sale !
www.ethelthebeemer.blogspot.com |
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granth
Mad Brick Rider
Joined: 04 Aug 2010
Posts: 78
Location: Birmingham,England
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| Posted: Fri Oct 01, 2010 6:35 pm Post subject: |
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I am by no means an expert on BMW Ks as I have only had mine 6 weeks,but I would start by checking the airfilter and ensuring that is not blocked/dirty in need of replacement.
Check that the "choke" is not engaged (i.e cable too tight etc)even if the handlebar lever seems to be "off".Check the throttle spindles move freely and are not sticking and finally check/have checked the air balance on the throttle bodies.
If all that checks out and there is still a problem try getting it checked out/ tuned by someone like "The BMW man" Phil Hawksley,who is in Leicestershire.You can Google him.
Good luck ! 
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1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM. |
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wotan
Joined: 01 Oct 2010
Posts: 13
Location: Northants UK
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| Posted: Sun Oct 03, 2010 4:24 pm Post subject: |
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| granth wrote: | I am by no means an expert on BMW Ks as I have only had mine 6 weeks,but I would start by checking the airfilter and ensuring that is not blocked/dirty in need of replacement.
Check that the "choke" is not engaged (i.e cable too tight etc)even if the handlebar lever seems to be "off".Check the throttle spindles move freely and are not sticking and finally check/have checked the air balance on the throttle bodies.
If all that checks out and there is still a problem try getting it checked out/ tuned by someone like "The BMW man" Phil Hawksley,who is in Leicestershire.You can Google him.
Good luck ! |
Hi Granth,
Think I've fixed it. Coolant was just about empty. Filled expansion tank, changed engine oil and started clean first time having previously belched black smoke all over the garden. Looks like all that was cooling it was the engine oil.......
Parts I'm looking for if anyone has them surplus, hazards rocker switch, right hand mirror glass, 12v socket to go next to ignition key.
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1986 K75C
1997 K1100LT for sale !
www.ethelthebeemer.blogspot.com |
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DaveVoorhis
Flying Brick Rider
Joined: 22 Mar 2006
Posts: 223
Location: Derbyshire, UK
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| Posted: Sun Oct 03, 2010 4:58 pm Post subject: |
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| wotan wrote: | | Coolant was just about empty. |
Where did the coolant go?
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'93 K1100RS
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wotan
Joined: 01 Oct 2010
Posts: 13
Location: Northants UK
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| Posted: Mon Oct 04, 2010 3:14 pm Post subject: |
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| DaveVoorhis wrote: | | wotan wrote: | | Coolant was just about empty. |
Where did the coolant go? |
Dunno. Checked levels during maiden ride and had a look around but nothing steaming / pouring out. No leaks detected since parked up and level has stayed the same.
Maybe it was a rebuild oversight, the bike was on SORN so maybe had not even been ridden since the rebuild. Just have to keep an eye on it. 
Oh yes. Another thing. The clocks pogo up and down in a mad frenzy on bumpy roads - is this normal or is there a bracket missing ?
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1986 K75C
1997 K1100LT for sale !
www.ethelthebeemer.blogspot.com |
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granth
Mad Brick Rider
Joined: 04 Aug 2010
Posts: 78
Location: Birmingham,England
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| Posted: Mon Oct 04, 2010 5:21 pm Post subject: |
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Glad that you seem to have tracked down the problem.
Re the instruments moving about, that does seem abnormal,mine stay steady even on rough roads.Check the fixing are'nt loose/missing.The have a little flexibility,but not much. 
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1993(94 MODEL) K1100RS IN ASTRAL BLUE
2006 URAL 750CC DALESMAN SIDECAR OUTFIT,
RED AND CREAM. |
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wotan
Joined: 01 Oct 2010
Posts: 13
Location: Northants UK
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| Posted: Tue Oct 05, 2010 12:24 pm Post subject: |
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| granth wrote: | Glad that you seem to have tracked down the problem.
Re the instruments moving about, that does seem abnormal,mine stay steady even on rough roads.Check the fixing are'nt loose/missing.The have a little flexibility,but not much. |
Shoved a big wodge of sponge in the top gap for now - waiting for workshop cd to arrive so I know what to look for.................
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1986 K75C
1997 K1100LT for sale !
www.ethelthebeemer.blogspot.com |
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tibbe
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Joined: 14 Jul 2003
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Location: Lulea Sweden
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ackgs
Joined: 07 Aug 2010
Posts: 15
Location: S.E. Mass
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| Posted: Wed Oct 06, 2010 7:35 am Post subject: |
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| As to the "clocks" bouncing on my recently aquired K75s I found that the bolt on the right side of the instrument pod bracket that hold the front fairing and the bracket together was missing. On my S it is up under the front and side fairing. Had to remove the side fairing to replace on mine. Bouncing was much less after replacement. |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Wed Oct 06, 2010 7:44 am Post subject: |
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BMW OEM repair manual in English:
http://www.k11og.org/forum/viewtopic.php?t=4715
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
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IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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merlin geikie
Flying Brick Rider
Joined: 26 Dec 2008
Posts: 343
Location: Lismore far north coast nsw australia
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| Posted: Wed Oct 06, 2010 9:14 am Post subject: Thank you very much |
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Thanks for that handy link 
All the very best
Safe roads
Fun rides |
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Ted
Site Admin
Joined: 03 Apr 2003
Posts: 1117
Location: Further
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| Posted: Wed Oct 06, 2010 10:54 am Post subject: |
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Holy Cow Sven-Erik, that K11 supplement on your site is a gold mine of documents! I just have to work on my German speaking abilities now 
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Tim (Midland Section)
Flying Brick Rider
Joined: 08 Apr 2005
Posts: 960
Location: Pinxton, Nottingham, England.
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| Posted: Wed Oct 06, 2010 6:54 pm Post subject: Re: K1100LT running rich |
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| wotan wrote: | Hi,
I am in the UK, Northants, and have just bought a 1997 K1100LT. I was told that it is running rich. It came with some old plugs and they are very sooty.
Any advice on what is the cure - it would be very handy if anyone in my area has any experience of this. |
Look for "Bodger" on the UK BMW forum, tell him I sent you, he is quite close, mind you Nottingham ain't that far for a K11.
BTW the "choke" (strangler, USA speak) isn't, the ECU controls the mixture, that lever only raises tickover to prevent stalling whilst cold.
Welcome.
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Regards Tim,
Grey haired riders don't get that way by pure luck
1996 Guzzi Cali3 LAPD
1972 750 Commando
G6HRN
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wotan
Joined: 01 Oct 2010
Posts: 13
Location: Northants UK
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| Posted: Fri Dec 24, 2010 3:47 pm Post subject: old posts never die...... |
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Since the last posts I have used a full tank of fuel with injector cleaner added but the black smoke start ups are still there. Seems to clear when hot but puffs black smoke upon blipping the throttle.
Opinions have coincided on the long period the bike was laid up during its rebuild by the previous owner - namely that it needs regular riding to clear.
No chance of that weatherwise at the moment but have adjusted the mixture screw to base setting and will change plugs and airfilter when the weather lifts.
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1986 K75C
1997 K1100LT for sale !
www.ethelthebeemer.blogspot.com |
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miKeinWIs
Mad Brick Rider
Joined: 29 Jun 2009
Posts: 143
Location: Birchwood, WI
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| Posted: Sat Dec 25, 2010 12:25 pm Post subject: |
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Merry Christmas wotan--
in re the floppy instruments (I think that's what you're talking about :-))
Make sure the front fairing bracket isn't broken. The one that attaches to the upper fork. My instruments shook bad 'til I figured out both top bolt attachments weren't--attached to the bracket. Any play in the faring when you push on it??
Seems to be a common fault. Wimpy attachments--as David Hobbs would say.
Good luck
Mike
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'97 K1100LT
Bought 6/30/09 w/26,750 miles |
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Tim (Midland Section)
Flying Brick Rider
Joined: 08 Apr 2005
Posts: 960
Location: Pinxton, Nottingham, England.
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| Posted: Sat Dec 25, 2010 6:26 pm Post subject: Re: old posts never die...... |
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| wotan wrote: | Since the last posts I have used a full tank of fuel with injector cleaner added but the black smoke start ups are still there. Seems to clear when hot but puffs black smoke upon blipping the throttle.
Opinions have coincided on the long period the bike was laid up during its rebuild by the previous owner - namely that it needs regular riding to clear.
No chance of that weatherwise at the moment but have adjusted the mixture screw to base setting and will change plugs and airfilter when the weather lifts. |
Mixture screw, what mixture screw? As I typed before, the mixture is controlled by the ECU. There is a variable resistor hidden on some models under the near side panel, but that needs a exhaust analyser to set correctly.
K's often smoke on start up, usually blue for oil. Black for petrol would indicate poor combustion. Suggest you get a Clymer manual, the download Duck suggested is good, but does have some bits missing. Look forward to seeing you on the road one day.
_________________
Regards Tim,
Grey haired riders don't get that way by pure luck
1996 Guzzi Cali3 LAPD
1972 750 Commando
G6HRN
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merlin geikie
Flying Brick Rider
Joined: 26 Dec 2008
Posts: 343
Location: Lismore far north coast nsw australia
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| Posted: Sun Dec 26, 2010 12:09 am Post subject: |
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Tim writes;
| Quote: | | Suggest you get a Clymer manual, the download Duck suggested is good, but does have some bits missing. |
Any chance of a freebie Clymer manual download
Pm me if possible and if confidential link please
Wouldn't too rich mean bad mpg? |
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Tim (Midland Section)
Flying Brick Rider
Joined: 08 Apr 2005
Posts: 960
Location: Pinxton, Nottingham, England.
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| Posted: Sun Jan 02, 2011 6:32 pm Post subject: |
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| merlin geikie wrote: | Tim writes;
| Quote: | | Suggest you get a Clymer manual, the download Duck suggested is good, but does have some bits missing. |
Any chance of a freebie Clymer manual download
Pm me if possible and if confidential link please
Wouldn't too rich mean bad mpg? |
Never found a Clymer download, had to get the Mrs to buy the book, worth ever penny.
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Regards Tim,
Grey haired riders don't get that way by pure luck
1996 Guzzi Cali3 LAPD
1972 750 Commando
G6HRN
#485 |
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rgscomp
Brick Rider
Joined: 18 Feb 2009
Posts: 33
Location: Kidlington, Oxfordshire
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| Posted: Wed Jan 05, 2011 7:35 am Post subject: Check the injectors... |
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One thing worth checking is the injectors. I had a similar problem a year or so ago.
Black smoke on startup and riding with mpg in the low 30's.
Took weeks to track down as I assumed as all plugs were sooty the problem was something to do with the engine management and sensors as it was affecting all cylinders. I tried different secondhand ecu, changed most of the sensors and even changed the fuel pressure regulator.
I finally tracked it down by wiggling all the wiring for each injector individually.
In my case, wiggling No. 1 injector cabling made a difference to the engine note. I swapped the injector to another cylinder and the fault moved. Replaced with secondhand injector and back to 50-55mpg and problem resolved.
It was still passing fuel as exhaust header not cold for that cylinder, but not reliably I guess. The ECU was richening up the mixture on all cylinders to compensate.
Cheers,
Ray. |
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