01-11-12, 11:03 PM
Is this a new problem, Luke? Was the motor running perfectly before now? What's the idle speed set at?
I'd start by checking plugs, leads, caps etc. Rule out ignition-related causes as far as possible.
The symptoms suggest over-rich idle fuelling (assuming it's not plugs etc). It's still on standard jetting, IIRC, but is it possible that the mixture screws have been messed with?
Another possibility is that the float needle valve seat O-rings are leaking a little. Not enough to flood the carbs and cause fuel to leak from the overflows but enough to raise the fuel level in the float bowls too high.
I'd start by checking plugs, leads, caps etc. Rule out ignition-related causes as far as possible.
The symptoms suggest over-rich idle fuelling (assuming it's not plugs etc). It's still on standard jetting, IIRC, but is it possible that the mixture screws have been messed with?
Another possibility is that the float needle valve seat O-rings are leaking a little. Not enough to flood the carbs and cause fuel to leak from the overflows but enough to raise the fuel level in the float bowls too high.