Ignition / Electrical problem
Good morning. I have a 1991 K100LT. Earlier this year the bike started to backfire a lot and then whilst out riding it just died and I had problems starting it. I did get it home but have not been able to start it since. When you turn on the igintion, it sounds as though the fuel pump is continually operating. I thought it might be a problem with the fuel rail or injectors but subsequent advice from a BMW service agent stated it was the ignition control pack. They quoted a part price almost as much as the bike is worth so a new one is out of the question. They couldn't help with a second hand part.
Having looked online, all I seem to find info about is an "electronic control unit" (ECU) not an "ignition control unit" (ICU). My ECU is under the seat but I have seen other posts on this forum that indicate an ICU under the tank. Certainly when I disconnect the ECU I still get the same symptom with the fuel pump etc.
I would be grateful for any information about this problem. Thanks.