The set up i have on the van is like this, using the original tank i've built a swirl pot inside. Both pumps are inside the tank, submerged in fuel.
Basically the lift pump is just a normal fuel pump pumping fuel into the swirl pot. But it's flowing unrestricted, no back pressure, at the moment and excess fuel flows back into the main tank when the swirl pot is full.
Problem is, i was on the motorway the other day and the (secondhand) lift pump (normal fuel pump) shit it's pants and died so no fuel was in the swirl pot and we were stranded.
Question is, has it shit it's pants because it's not building up any pressure? I would have thought it would have an easier time if there was no back pressure. I've fitted another pump at the moment, but don't want it to eat pumps. Should i put a restriction in the pipe so that it's forced to be under pressure all the time? What size restriction would you recommend?
Or is it just coincidence? And a shit secondhand pump?
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