I thought you had the Pierburg carb? Solex(Zenith) and Pierburg used on
Volvos have a diaphragm and oil damper, SU carbs have only the damper. The
Solex Cisac is a twin choke type. As far as I know the carbed engines only
have a mechanical fuel pump on the engine, no electrical pump in the tank.
Have you tried a new mechanical fuel pump?
Stuart
