I have an issue with my 1989 K100. Bike was running perfect until a few days ago. Riding on highway and throttle stopped unexpectedly and then kicked back in.
Did this a number of times until it finally quit altogether. Got the bike home and I fear I have a ground issue somewhere. I noticed the fuel pump wasn't running when hitting the starter. Tried picking up the tank and as soon as there was movement the fuel pump kicked in. When moved again it kicked out. I fear the tank itself is acting as a ground to the frame. I am thinking this is due to a faulty fuel sending unit as the connector seems to be making good contact underneath the tank. Any help would be greatly appreciated.
Did this a number of times until it finally quit altogether. Got the bike home and I fear I have a ground issue somewhere. I noticed the fuel pump wasn't running when hitting the starter. Tried picking up the tank and as soon as there was movement the fuel pump kicked in. When moved again it kicked out. I fear the tank itself is acting as a ground to the frame. I am thinking this is due to a faulty fuel sending unit as the connector seems to be making good contact underneath the tank. Any help would be greatly appreciated.