Talk Morgan Forums Morgan Sports Cars Morgan Three Wheeler & Super 3 Fuel pump again

I think it is the vibration that is killing our fuel pumps except in Lauren's case were I think it was just a bad unit to start with. Just to many have gone bad in such a short time.

A float type sender has been used for all the years I can remember on US made cars, not sure about British/European cars.

For the most part while driving down the road cruising, they do very well to give an accurate reading. When going round hard corners or start/stopping, the gas gauge is the last thing you're going to be looking at.

I agree that the somewhat shrouded VDO sender would "slow" down the response of the fuel sloshing around in the tank, but when you really need to see the fuel gauge, I feel the swinging float would be just as accurate. Also the swinging float with the fuel pump is designed to match the length of the fuel pump, assuming the fuel pump scavenging is located at the bottom of the tank.

Is there enough room inside the tank based on the fuel pump location to try and use the swinging float sender? Is the impedance the same as the VDO sender?

I'm sure old Fords used to use a ballast resistor in the fuel gauge circuit to smooth out the fluctuations of the lever type sender.

I too wondered about fitting a lever type sender in the tank.

There is room for it BUT the pump would have to be turned 180 degrees to accommodate the swing arm. That would mean that the fuel lines going to the pump would have to be replaced with slightly longer lines. The return line would have to double in length to curve around the head in order to not get kinked. The line to the engine would have to be increased by another 8 inches or so.

I have no idea about the impedance values.

Not starting for mine was the cam belt pinion was loose and ruined the crankshaft. It would turn just enough to hold the compression release open. Once running it seemed to run fine.

Second fuel pump fail. Engine fail. 20,000 miles

Engine failed at 20,000?