Thread: Fuel Pump Advice

An overhaul kit for the original isn't that expensive.

AEU2760G | Fuel pump repair kit - 4cyl Petrol and Diesel

The only problem I've found in recent years is sometimes the valves stick on the aftermarket repair kits. Seems to be mainly a problem when the vehicle is left idle for a long period.
The one above is genuine and may be OK.

Colin

An overhaul kit for the original isn't that expensive.

AEU2760G | Fuel pump repair kit - 4cyl Petrol and Diesel

The only problem I've found in recent years is sometimes the valves stick on the aftermarket repair kits. Seems to be mainly a problem when the vehicle is left idle for a long period.
The one above is genuine and may be OK.

Colin

Successfully overhauled mine, but a new one is not that expensive. However, I am also thinking of fitting an electric pump as vapour lock can occur in very hot weather, and an electric lift pump to feed to the mechanical pump should overcome this. It nearly cost Len Beadell his life when he had to use water to cool the fuel system in order to make progress (although he was driving a SII).

Coop

I have replaced both my S3 pumps with Facet electric pumps mounted above the tank. No issues so far as they are reliable.
Only issue I can see is that in the case of an accident the pump will continue to pump fuel into a potential fire after the crash.
I'm sure this can be managed though with some clever electronics.
Regards,

I've bought a facet pump for the series 3 rebuild going on at the moment.

While Phil has a point, if you're in a prang hard enough to sever a fuel line in a series, you're going to be in pretty bad shape to start with...

No clever electrionics required just a changover relay

Wire the solenoid of a DPST relay between batt+ on the coil and the oil pressure switch.

wire from batt + on the coil to the NC contact on the relay

wire from Common on the relay to the electric fuel pump and earth the pump

if you're concerned about priming wire from the NO contact on the relay to batt+ via a momentary SPST switch.

Do not put an electric pump on the suction side of a mechanical pump. IF the mech pump has a diaphragm failure you will fill the sump with fuel. the end result of this in the extreme can only be defined as entertaining and costly.

Put the pump on the delivery side of the mechanical pump or bypass the mechanical pump completely.