1 It's time to check the EFI. '85 K100RS Fri Jan 26, 2018 4:01 pm
Moore152
active member
Hello everybody.
While riding, I lost engine power and bumbled to a stop. All electronics were still up.
The starter turns vigorously, but the bike never fires again, not even for a second. Into the garage it goes.
One year later...
'85 K100RS
Problem: Cranks, but no start. No other apparent electric issues.
What I did:
-The obvious stuff (fuses, connections, N, clutch), Crazy Frog's guide
-Bought a terrible looking hall effect sensor and swapped it in. No effect. Mine might be fine. Both might be dead. Now I'll test instead of throwing money at it.
What the bike does:
-Starter turns
-Fuel pump runs
-Pressure at rail, injectors can pass fuel & are not stuck
-all 4 injectors do NOT fire with rail removed from engine while cranking
What I am doing:
-Buying another multimeter (don't lend tools)
-Testing the airflow meter
-Testing both HESs
-Asking you for help
This doesn't sound like the normal HES story, does it? Never had symptoms before this. Died once, and never started, or even burped again.
The bike saw 48hrs of heavy rain just before the ride...
This bike has seen a lot of moisture over its mostly outdoor life. Dead Jetronic/Fuel injection "computer"? AFM?
The FI computer needs an RPM signal from the ICM/HES and what else to send the "squirt fuel" command?
Thank you,
Moore
While riding, I lost engine power and bumbled to a stop. All electronics were still up.
The starter turns vigorously, but the bike never fires again, not even for a second. Into the garage it goes.
One year later...
'85 K100RS
Problem: Cranks, but no start. No other apparent electric issues.
What I did:
-The obvious stuff (fuses, connections, N, clutch), Crazy Frog's guide
-Bought a terrible looking hall effect sensor and swapped it in. No effect. Mine might be fine. Both might be dead. Now I'll test instead of throwing money at it.
What the bike does:
-Starter turns
-Fuel pump runs
-Pressure at rail, injectors can pass fuel & are not stuck
-all 4 injectors do NOT fire with rail removed from engine while cranking
What I am doing:
-Buying another multimeter (don't lend tools)
-Testing the airflow meter
-Testing both HESs
-Asking you for help
This doesn't sound like the normal HES story, does it? Never had symptoms before this. Died once, and never started, or even burped again.
The bike saw 48hrs of heavy rain just before the ride...
This bike has seen a lot of moisture over its mostly outdoor life. Dead Jetronic/Fuel injection "computer"? AFM?
The FI computer needs an RPM signal from the ICM/HES and what else to send the "squirt fuel" command?
Thank you,
Moore