Cant here it when its cranking over,
I was thinking non return valve,
The pump is noisy or was noisy with the previous owners wiring, last ran about 2 weeks ago, driven about a month ago.
When it ran with the previous owners ignition live to fuel pump of fuel pump relay (safety module) it ran rich/high idle like choke was on even after 10-15 mins idling when temperature hit 80c odd and fan would come on/off so that's one of reasons I took his wiring out and purchased a fuel pump relay,
Also the rev counter has never worked as I know that's connected the the fuel pump relay and speed sensing relay