derrickstone
New member
Dear BMW Forum Brain Trust,
I have finally put back together the 1996 bmw R850R I have been fixing over the last year. I won't say restoring, as that would imply the bike is better to look at now.
I have replaced the tank and fuel pump/filter etc. along with several parts some related, some unrelated. The bike sat outside under a deck with ethanol fuel in the tank for a number of years and consequently the tank had rusted completely through. (some previous posts on here) The previous owner indicated they spent some amount of time trying to get it to start. Basically all of the fuel tank and pump are new.
At this point, it is back together 90%. When I attempt to start the bike with a little carb cleaner in the throttle bodies it fires and will run briefly. If I pull the fuel lines from the fuel injectors, the there is plenty of fuel that comes out - the pump is working and I have confidence that is operating. When I turn the key, you can hear the fuel pump whir up and pressurize. It seems to me that the fuel injectors are just not firing - sending fuel into the Throttle bodies. I have checked the fuses and found them all fine.
I have pulled the injectors and doused them with cleaner. There is no visible varnish or gum. Fuel isn't flowing through either injector, so I suspect something electrical.
What else should I check?
Thank you in advance!
I have finally put back together the 1996 bmw R850R I have been fixing over the last year. I won't say restoring, as that would imply the bike is better to look at now.
I have replaced the tank and fuel pump/filter etc. along with several parts some related, some unrelated. The bike sat outside under a deck with ethanol fuel in the tank for a number of years and consequently the tank had rusted completely through. (some previous posts on here) The previous owner indicated they spent some amount of time trying to get it to start. Basically all of the fuel tank and pump are new.
At this point, it is back together 90%. When I attempt to start the bike with a little carb cleaner in the throttle bodies it fires and will run briefly. If I pull the fuel lines from the fuel injectors, the there is plenty of fuel that comes out - the pump is working and I have confidence that is operating. When I turn the key, you can hear the fuel pump whir up and pressurize. It seems to me that the fuel injectors are just not firing - sending fuel into the Throttle bodies. I have checked the fuses and found them all fine.
I have pulled the injectors and doused them with cleaner. There is no visible varnish or gum. Fuel isn't flowing through either injector, so I suspect something electrical.
What else should I check?
Thank you in advance!