K11 Owners Group

Klinker · Posted: Thu Apr 22, 2010 5:25 pm Post subject: Stalling problem

OK, K-Gurus. I'm hoping for some help on this one. From the top:

Had the KRS serviced last August - new plugs, adjust valves and sync TB's. O2 sensor was "out of range," but did not replace it. ($300!) Rode about 4000 trouble-free miles (except for the final drive failure) before I put it away last November. Kept meaning to add some fuel stabilizer and top off the tank, but never got around to it. (First time in 20 years.) Anyway, I figured how bad can it be?

Had the battery tender on all winter. Finally started it up in late March. It ran fine so I burned out most of the old gas (about 100 miles, running great) and topped it off with fresh and half a bottle of Chevron Techron.

Started it a few weeks later. After riding a while, it sputtered and stalled. Started up with a little hesitation, kinda' like it was flooded. I ran it for twenty miles with occasional hesitation, but no more stalls.

It has had issues with stalling occasionally over the past four years, but it would typically go away after I replaced the fuel filter. I replaced the filter again today and went for a test ride.

Again, it hesitated then stalled. I was able to restart it, but it occured again five miles later. It tended to sputter as I was backing off the throttle. But again, I was able to restart it, acting like it was flooded.

After sitting for about 45 minutes, I took it out again. This time it stalled within ten blocks and did not want to restart. It finally did after about five minutes, but quit again after about a minute of idling. After many attempts, I occasionally got a start that lasted less than a minute. Eventually, I gave up and started pushing (fortunately, I wasn't far from home.) After about ten minutes of pushing, I was able to restart it and it ran long enough (two minutes) to get it home.

I've thought about disconnecting the battery in hopes of getting the Motronic to reset, and I could pull the plugs to check them. Other than that, what does the wisdom of the forum suggest?
_________________
tlp
1994 K1100RS

Only the Reasonists. They believe in an evidence-based world, something called Rationalism. But it's a tiny group, not so influential.
- Page Griffin

Flying Duck · Posted: Thu Apr 22, 2010 5:50 pm Post subject:

There might be some water sloshing around in the bottom of the tank. I'd drain i/siphon it to be sure

Check the tank connector.

What's an i/siphon? Do they sell those at the Apple store?

/\
|

Jim: Stop editing my posts! Razz

Shoulda been "drain it/siphon it"

Sorry, Drake. I accidentally hit edit instead of quote... Embarassed

_________________
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
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Scott_Anderson · Posted: Thu Apr 22, 2010 5:53 pm Post subject:

Could a faulty temp sensor cause problems, and/or shutdown.
_________________
Ride safe.

1995 K1100LT 0302044
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

Klinker · Posted: Thu Apr 22, 2010 10:55 pm Post subject:

Scott_Anderson · Posted: Fri Apr 23, 2010 7:15 am Post subject:

tmoons · Flying Brick Rider Joined: 09 Oct 2008 Posts: 161

Hi,
sensors do not have to be that expensive!
I bought a new one from
www.lambdapower.co.uk (part 0258003251) for less than 70 GBP.(including shipping to mainland europe)
Do not get tempted by the "universal" sensors, the did not work in my K1100RS.
Also see:
http://lambdapower.co.uk/partsearch/crossref_bosch.asp?idlist=0258003251&submit=GO

Hope this helps!
80 ponds is about 125 USD.

Ted · Posted: Fri Apr 23, 2010 9:07 am Post subject:

Honestly this sounds like a bad fuel pump. That said, let's get some troubleshooting done.

First, it never hurts to change the plugs if you have not done that in a while (make sure they are accurately gapped) and to re-seat the motronic cable. Sometimes these things can be a combination of little things instead of one big thing. Sounds like you have already replaced the fuel filter, that is good.

When the bike stalls and won't restart... Turn everything off and open the gas cap. When you center the kill switch and turn the key on do you hear the fuel pump? If you open the gas cap while turning the starter, can you hear the pump running and see/hear gas returning to the tank?

The symptoms of a failing pump are sudden stalling, at idle or at speed. After a few minutes the bike will often restart as if nothing was wrong. Often a failing pump will start right back up if you get into the tank and give it a light shake or a few taps.
_________________

Ted

KOG#1

Klinker · Posted: Fri Apr 23, 2010 9:52 am Post subject:

Ted · Posted: Fri Apr 23, 2010 12:41 pm Post subject:

If you have the time, give this page a good read. A good portion is totally lost on me, but much of it is highly informative:
http://hrsbstaff.ednet.ns.ca/bvogel/K100/download/bike-wont-start1.htm
_________________

Ted

KOG#1

Flying Duck · Posted: Fri Apr 23, 2010 1:35 pm Post subject:

I think we might need a "My bike is stalling/quitting on me" sticky thread.

Might save a lot of typing.

Volunteers? Laughing

_________________
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
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Klinker · Posted: Sun Apr 25, 2010 2:09 pm Post subject:

Klinker · Posted: Mon May 17, 2010 11:18 pm Post subject:

Finally took to bike to the dealer since time, diagnostic equipment and know-how were in short supply. So for K11OG posterity, here is the diagnosis.

Flying Duck · Posted: Mon May 17, 2010 11:24 pm Post subject:

I keep eyeballing the demo S1000RR every time I'm at Ride Worst to pick up little parts. I think next time I'm in there I may take it out for a spin. The problem is that I probably wouldn't want to come back. Very Happy

_________________
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
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE