Booyah45828
Full Access Member
Most do, that can be a source of air intrusion after you shut the truck off.
Return line check valve? You're putting that in your transfer line from the other tank right, and not actually in the return line to the tank?
What pressure are you talking about?
Those pressures for filter inlet and outlet are the minimums when troubleshooting issues. Injection pumps are calibrated at 5 psi inlet pressure, so supply somewhere around that to the pump and you're golden.
You should set/check the timing regardless. It's been known to change with age and wear.
I still think you have return issues. There shouldn't be any pressure there, if there is pressure, there is a restriction. Did you ever check what the return pressure was with the engine revved up? You've stated there is nothing you can do about it, but that's not the case. Any pressure there can eventually cause the return caps and o-rings to leak. So IMO, avoiding fixing this problem will only lead to more down the road.
I was talking about IP fuel supply pressure in that last post.
I'm using the return line for both, but not at the same time. Although, I did try both when driving up to around 25-30mph on a side street with no traffic and the engine tone didn't change.
The rear tank supply is fed into front tank's return line by a pump via a tee near the front tank. The pump is on a switch located next to the headlight switch so it's not running constantly.
I assume your check valve will be placed between the transfer pump and the tee in the return system?
Fuel Pressure (Filter Inlet) 14 kPa (2 psi) @ idle
Fuel Pressure (Filter Outlet) 7 kPa (1 psi) @ 3000 rpm
Fuel Pump Suction 20 kPa (6 in. H2O) @ 3000 rpm
Fuel Return Line Pressure 14 kPa (2 psi) @ 3000 rpm
I found that at:
https://www.ford-trucks.com/forums/...diesel-engine-performance-specifications.html
So, Cubey, what is the final analysis of your electric pump conversion?
For what it's worth, some used inverted flare and some have an o-ring seat. Just a heads up in case it leaks with the new fitting. I "think" yours should be inverted flare like you ordered.