Outer Limits 4x4 Board

1991 80 series 3FE (now chev)

I have jumped the diagnostic port under the bonnet to try and get fuel to flow through the fuel line. I can hear the pump pumping but there is no fuel flowing. To give some background, the fuel pump was new 12 months ago and installed in the vehicle but never used, so it has been sitting in a half empty tank for a year. Could the pump be wrecked because it has been siting around or is it something else remembering that I can hear it trying to pump?

pull the pump and test on the bench if that is possible

did u hook it up the right way round??? it might be sucking from the motor to pump to the tank....
Secondly, the tank might now be empty....
thirdly, the pump might be blocked on inlet but most improbable.

I put fuel in the tank so that shouldnt be the problem. Sucking not pumping is interesting. How do I know which is which?

reverse your polarity?

No polarity to change as it was jumped from the diagnostic port?

Take the pump back out of the tank and switch the two wires over, if it is wrong, the pump will be sucking instead of pumping.......while its out, you can test whether it is right or not...and whether it needs replacing again or not. The other thing that will stop fuel is a plugged up filter...

your on the money, that is exactly what I will do tonight. Give me a good chance to take the seats out and clean up as well.

found the problem. The rubber tube from the pump to the pump housing was off? So the pump was pumping but going no where. Wonder how that happened?