Question about 2001 BMW F 650 GS
Once warmed up and during quick acceleration I am getting a "pinking" sound from the motor, gradual acceleration does not cause this? It sounds like the ignition timing is too advanced, is this possible? No mechanical work has been carried out on the bike, bar a general service with plugs and brake pads changed. The plugs were only changed to try and correct the "pinking"- No change except a slightly smoother idle though. The bike got quite warm, throwing some coolant from the expansion bottle on her last run due to heavy sand prior to the noise becoming apparent - Could this be the cause? other Bm's did the same and seem fine. I have checked the cooling sysyem and there is no sign of pressurising. I'm stumped, please help.
email Gareth Morgan at email@example.com he rode a 650 GS from Europe to China and experienced running on some very low octane fuel ( 87) in central Europe .
Posted on Jan 23, 2009
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