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Showing results for tags 'very rich running'.
I have been cleaning up my carbs and they are now running very rich. Needle in correct place, mixture control at high adjustment against spring. The piston is quite hard to push up with a screwdriver with the engine off. I think this may be the problem. If the damper is not fitted the piston moves OK. It was all OK until I cleaned everything and put it back together. Any help would be very useful. Thanks Richard & B