BMW K bikes (Bricks)

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piseth

piseth
active member
active member
Im asking on behalf of friend. He has a 83 k100. When he is on the move, the engine will die off when he clutch in. Anybody has this problem before? Thanks in advance
Just found oùt that when we throttlr on a constant rev, it will also die off when park on mainstand


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Laughing Laughing Laughing
K100 RS 1990 December
Last Location: Japan
Current Location: Cambodia
vin:0201460
    

K75cster

K75cster
Life time member
Life time member
There is a little rubber tube runs from the intermediate/engine housing to the plenum chamber that may be cracked allowing air in. same can happen for the throttle rubbers.
Is the fuel pump and filters good and clean? As an injector sticking from dirty fuel would slow things down too.


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Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

Holister

Holister
Life time member
Life time member
Sounds like the same problem I had 18 months ago. Roll the throttle off, pull the clutch in and the motor would just die. Plagued me for 6 months. Turned out to be tight exhaust valve clearances.
https://www.k100-forum.com/t8442-engine-cutout-on-throttle-off
Solution see page 3 #118

If this is the problem with your friends machine then the valve clearanced need to be checked and re-shimmed asap. If the exhaust valves are not closing properly they can get very hot and burn and will need re-seating (head needs to come off). Looks like I will be doing mine in the coming months.
K100 83 engine shuts down when clutch in on the move 178468


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1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
  K100 83 engine shuts down when clutch in on the move Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

92KK 84WW Olaf

avatar
Life time member
Life time member
Just a little hunch since the cut out is linked to the pulling in of the clutch lever.

Check the routing of the clutch cable and the electrical connections beside it in the area under the fuel tank. Some of these connections can be upset if the movement of the cable can interfere with them. Cable ties generally keep the electrics away but these can sometimes be removed and not replaced.

Don't ask how I know......


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1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

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