Forums General Counties Cars Discussion 1949 Austin Devon petrol pump Reply To: 1949 Austin Devon petrol pump

#7885
PeteJS
Keymaster

When you reassemble the pump you need to ensure that the diaphragm is under pressure from the spring as you fit it into place. If it’s not under pressure, the pump will suck but not blow.

It sounds like you may have not got the diaphragm under pressure in this case.