92KK 84WW Olaf
Life time member
Number of posts : 7955
When I had the problem with my K100LT I swapped the unit up under the headstock and it solved the problem. I never bothered getting it tested because BMW wanted €75 to do that and I bought one off Motorworks for much less. I actually don't know if it was the unit or the multi pin connection although I did clean them all up to no avail.
The K75 it was the unit under the seat and was the multi pin connection.
As KH has said, plug, injectors, HT and back from there. But in my mind its something that affects all 4 cylinders equally so my take is that its more likely to be further back in the system than an individual plug, lead or coil.
Having had a car go down here last week due to a fuel pressure sensor/regulator [would turn over and splutter but not run] I am wondering could there be an issue with that or a connection to it?
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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 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles.
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 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