A few months ago I bought a R1 (2000). Since last week I have noticed that the idle speed is fluctuating during cold start, but also when the engine is at operating temp. Fluctuations are somewhere between the 1000 rpm +/- 100/200 rpm.
Also, when riding the bike, it is not running smoothly. Gas response seems not to be 'lineair'. A small input sometimes results in high rpm's.
The following items have been performed/checked:
- oil and oil filter replaced
- Spark plugs replaced
- air filter replaced
- Carbs. Ultrasonic cleaned.
- fuel filter replaced.
Video of fluctuating idle:
Does anyone have an idea what could be the root cause?