Got one on my workbench that I've been looking for a way to get rid of. It had 13 psi at idle and 6 at WOT before I took it off. It's got maybe 3000 miles on it. Those were the pressures straight from the factory (it was the replacement for my first pump). Let me know where you want it shipped and I'll send it to you and you can just send me the money later.

 

I've got one that I ran for 101000 miles. It was down to 7 and 0 by the time I finally checked it. I have removed the rotor and vanes from the pump end but the motor end has not been touched. You can have it for comparison on the electrical end and to compare to the newer one above. I was going to tear down the motor end but can never seem to get time.<br><br>DD4X4

 

Gary F.Y.I I know you need the LP for test I thought I would send along this info. I run dual carter replacement pumps (P4600HP 7 psi, P4601HP 15 psi) with 3/8 SS lines. I also run dual fuel pressure gages. But this didn’t stop the lift pump going out, again. I got 11 months on the first set of carters before they went south ( I live in the north). I am working on the 3rd set. I took a look inside to find out just what went bad, to my surprises I found out. It was not the motor, or the rotor vain (the pump). It was the nylon bushing that connects the two shafts between them. The motor had more than enough power to rotate the shaft, where I think the problem lies is in the viscosity of diesel at –10 deg F. It appeared to be too much for that bushing and the slot wore out at less than 12,000 miles and would no longer engage the shaft to rotate the pump. Both of my pump problems have been in the winter. If carter which makes the OEM lift pump put a steel bushing in the pump a lot of problems would have not happened. Or maybe they would have. I think that the bushing will ware out anyway it is just a matter if time. Like I said the problem is enhanced when the viscosity of diesel at –10 deg F. is to great for the plastic bushing. OF=.02<br><br>