Spark Knock

[ROLAND]

I seem to have a Spark Knock ?? " hi RPM's" ( 20,000 mi ) Just started. I always run Hi - Octane. Any Ideas ???????????????

[BradfordBenn]

Um what year and model would help a little.

[ROLAND]

2004 R 1150 RTA

[Bokrijder]

I discovered that water/moisture in the fuel will make the oilhead ping violently under load. I'm not sure if it is the water or the fact that it has displaced fuel in the injector spray pattern thus causing a lean mixture.

Motard

[ROLAND]

OK Thanks