1 No Fuel Pressure Sun Jan 21, 2024 11:33 am
diceweiss
active member
Hey all, I could use some help diagnosing why I am unable to get my K100 started.
I've rebuilt my 87 K100 RS fully. I am at the point that I am trying to get it started again. The bike ran before the rebuild.
Here's where I am at.
It appears that the bike won't get the fuel pump to push fuel to the injectors, maybe not enough power is getting to the fuel pump?
Bike cranks but no sign of firing.
Verified there is spark.
Air meter is connected.
Bench tested FI Relay, clicks when 12V is applied.
Fuse #6 is in good shape.
All grounds have been cleaned and I believe are grounding properly.
Bench tested fuel pump, found it is gunked up so I bought a new one and bench tested it, it works.
Fuel sending unit has proper resistance, tank level meter is a bit beaten up but works.
Checked the plug from the harness to the fuel sending unit, it receives power when cranking. I cleaned the pins and the female end of the plug as best as I could.
Battery is charged fully.
Power is received to the brown and black wires for the fuel pump, about 8V when cranking. Tested with a multimeter outside of the fuel tank.
Anything I should check again or you think I am missing? Thanks!
I've rebuilt my 87 K100 RS fully. I am at the point that I am trying to get it started again. The bike ran before the rebuild.
Here's where I am at.
It appears that the bike won't get the fuel pump to push fuel to the injectors, maybe not enough power is getting to the fuel pump?
Bike cranks but no sign of firing.
Verified there is spark.
Air meter is connected.
Bench tested FI Relay, clicks when 12V is applied.
Fuse #6 is in good shape.
All grounds have been cleaned and I believe are grounding properly.
Bench tested fuel pump, found it is gunked up so I bought a new one and bench tested it, it works.
Fuel sending unit has proper resistance, tank level meter is a bit beaten up but works.
Checked the plug from the harness to the fuel sending unit, it receives power when cranking. I cleaned the pins and the female end of the plug as best as I could.
Battery is charged fully.
Power is received to the brown and black wires for the fuel pump, about 8V when cranking. Tested with a multimeter outside of the fuel tank.
Anything I should check again or you think I am missing? Thanks!