Carbs

[Steve Jones]

You don't say what the problems you're experiencing are, Adam. I wonder if your issues relate to using a fuel pump with your updraught Zenith? Dependant on what type of pump you're using and its location on the car it could be that fuel the pressure is too great for the carburettor and, if so, that can result in all sorts of issues from flooding to frothing in the float bowl. The FZ and FZB were quite basic carburettors with little to go wrong but were intended more for a gravity feed than pump. If your Chummy has a normal, scuttle, tank then try eliminating the pump all together with a simple pipe between tank and carb as original. If the tank is elsewhere and a pump is essential then look at fitting a pressure regulator so as to reduce the pressure of the fuel reaching the carb. The latter worked for me with a long standing problem although that was with an SU carburettor.

Steve