Paul Brydon wrote:[quote]
how does one check the carb piston slide? does the engine need to be running?
[/quote]
Start by switching off the engine, removing the air filters and opening the throttle fully. Insert a finger into the venturi and push the piston up, release it and let it drop. There should be no resistance or delay either lifting or dropping. Both carbs should behave the same.
Be careful, if you block the air holes in the bottom of the piston it will not move freely.
You can also remove the piston from the top (only 2 screws to remove) and inspect it for scoring or rubbing.
Hope that helps.
With my own carb problem, I have now fitted the service kit to the carbs, so I have effectively replaced all the seals, diaphragms, needles and jets. I am hoping to go an try them out tomorrow.
