1 K100 RS 16V 1990 will not start Mon Nov 13, 2023 11:37 am
th2000125
active member
Hi all,
I couldn't decide between 'Engine and transmission' or 'Electrical' apologies if this is the wrong category!
Mechanically the bike appears to be fine. The engine compression is good at around 160 - 170psi per cylinder. Starter motor cranks the engine as expected. Fuel is pumped around the system and all the injectors fire. Spark plugs, well, spark.
We've replaced:
We've repaired massive chunks of the main (non-engine) loom. Previous owner/s cut tons of wires. I don't believe that this will stop it from starting.
The ECU is reporting 1133 which should be the lower hall sensor. Testing it resulted in positive results, the voltage drops to 0v when passing metal through. One minor discrepancy was that one consumed 0.001ma compared to 0.002ma.
CO pot reads around 500ohm.
All the fuses are fine.
It randomly catches/starts for a second or two when spraying easy start into the air-intake. When we try to start the bike the choke is fully engaged as is the clutch. We've tried adding some throttle to no avail.
Honestly at a loss as to what to do next. Thanks for your time!
I couldn't decide between 'Engine and transmission' or 'Electrical' apologies if this is the wrong category!
Mechanically the bike appears to be fine. The engine compression is good at around 160 - 170psi per cylinder. Starter motor cranks the engine as expected. Fuel is pumped around the system and all the injectors fire. Spark plugs, well, spark.
We've replaced:
- The battery
- Spark plugs
- Starter relay
- Air filter
- Fuel filter
- Fuel pump (We tried to use it and it shorted. Smoke coming out of the fuel tank! fun stuff)
- A few fuses
- A few relays
- Injectors (replaced due to a mistake, but got them cheap)
We've repaired massive chunks of the main (non-engine) loom. Previous owner/s cut tons of wires. I don't believe that this will stop it from starting.
The ECU is reporting 1133 which should be the lower hall sensor. Testing it resulted in positive results, the voltage drops to 0v when passing metal through. One minor discrepancy was that one consumed 0.001ma compared to 0.002ma.
CO pot reads around 500ohm.
All the fuses are fine.
It randomly catches/starts for a second or two when spraying easy start into the air-intake. When we try to start the bike the choke is fully engaged as is the clutch. We've tried adding some throttle to no avail.
Honestly at a loss as to what to do next. Thanks for your time!
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BMW K100RS V4 1990
BMW F800GT 2013