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Join Date: Jul 2006
Location: Kennett Square, PA
Easy one on the radiator cap - you need the 14 psi. You should be able to find one at your local auto parts dealer, no problem.
For the carbs - kinda confusing, since you shouldn't have air in your fuel lines at all, but it does sound like your rear carb isn't drawing in fuel. If you pull the boot (carb to airbox) off the rear carb, and push up on the piston, you should hear a "skooosh" sound and feel a bit of resistance (not a lot, but some). If that piston just moves up and down easily, you may have a problem with the diaphragm - either a hole, or it's just not sitting right in the carb body. Have you cleaned the carbs lately? Or do you know when they were last cleaned?