K11 Owners Group

[michaelcurrin]

Been having this problem the last couple days, the bike will loose power, not completely, just a serious reduction. Usually only for a second or two then back to normal, however today it was for a couple minutes.

I also noticed that the tachometer stops working when this happens.

The plan is to start in the morning checking and cleaning all electrical connections.

Any suggestions would be appreciated.

Mike
_________________
Mike Currin
20 BMW R1250RS
93 BMW K1100RS / EML Speed 2000
06 Ducati ST3
67 Triumph 650 chopper

[Scott_Anderson]

I'd start with the multipin connector at the motronic under the seat.
After that I'd check the wiring down to the HES sensors, then maybe give the sensors a heat test to see if they are starting to fail when they get too hot.
_________________
Ride safe.



1997 K1100LT 0302488
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
1995 K1100LT 0302044(R.I.P.)
1997 R1100RT ZC62149(sold)

[Jim]

Hey Mike - could be any number of things - but that was what the K did last year before the connection in the bottom of the sending unit fried... Flip the tank up and look at the white plastic piece - if you see any yellow or brown spots, get a new one before they turn black.
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

[michaelcurrin]

Scott,

It doesn't appear to be heat related, it usually happens in the first few minutes of riding.

Jim,

I replaced the sending unit a little over a year ago, its pearlly white.


Other than that I used contact cleaner and dielectric grease on all connectors I could find, looked for pinched/skinned wires, changed the plugs, ordered new plug wires. Other than that the battery is getting a little long in the tooth so I'll pick up a new one next week and probably a fuel filter. Allthings it was getting to be time for anyhow.

I hate intermittent problems, the only thing worse is what we call self healing problems at work. That's when a piece of instrumentation just starts working again, for no reason we can figure out. You never really trust it after that.

Mike
_________________
Mike Currin
20 BMW R1250RS
93 BMW K1100RS / EML Speed 2000
06 Ducati ST3
67 Triumph 650 chopper

[Scott_Anderson]

[michaelcurrin]

So far so good,

After cleaning all the electrical connectors, new plugs, and a new battery it ran flawlessly on the way to work this morning, hopefully its fixxed.

Thanks

Mike
_________________
Mike Currin
20 BMW R1250RS
93 BMW K1100RS / EML Speed 2000
06 Ducati ST3
67 Triumph 650 chopper

[hosehoundfr86]

I have a 93 K1100 RS,,(70,000KM) ,, I have a similer problem ,, but the Tack does not cut out,,,missing and looses power,, starts ok but has to have the choke applied to get it to idle and keep running,,I'm getting plugs tomorrow, new fuel filter is here just have to get it in,,the coil connections look clean,,will know more in a couple of days

[Scott_Anderson]

Myself having the later models of the K, I keep forgetting that the early K's (as in mfg thru 07/93) will have an HES signal conditioner/amplifier that is mounted to a metal surface with some heatsink compound paste.
When this past dries out and the AMP can't dissipate the heat properly it can cause ign firing issues.
This was a left over component from the K1 and some K100's.

Usually removing the AMP and refreshing the paste will correct any issues.
_________________
Ride safe.



1997 K1100LT 0302488
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
1995 K1100LT 0302044(R.I.P.)
1997 R1100RT ZC62149(sold)