My 01 R1150R?s start problem has been bothering me for a long time.
It starts extremely well when engine is hot. However, when cold start, I have to push the start button at least 4~5 times (use fast idle lever every time, no wear in cable). The starter (2 year old) works well, crankcase keeps cranking, yet the engine does not start up. And the fuel consumption is rather high.
I took the following steps during troubleshooting:
- Change of brand new spark plug, hall effect sensor, battery(Motorbatt), air filter
- Change of engine oil (10w40)
- Valve clearance checked, fast idle lever checked, throttle valve checked and cleanup
- Fuel injector checked and cleanup, fuel pump checked
But it still cannot start up properly when cold start (it is spring here).
What else is there? Is there anything to do with the Bosch throttle position sensor? Why it starts perfectly when it?s hot?
Thanks in advance.