I had been noticing that my top end was getting worse and worse. So, yesterday I hooked a fuel psi gauge up. Fired the truck up and guess what,,,0psi. at idle I dont know how long this has been like this since this is the first time I have ever hooked the fuel psi gauge up to it. Kinda scary to think how the VE has been supplying its own fuel. I know the fuel priming lever hasnt worked for about a year. Got a new one from Cummins today. I now have about 4-5psi at idle. Top end is alot better as well. A set of high flow banjo bolts from Rod also went in. Just thought I would give yall a heads up.

 

Ya got a port on those Banjo bolts to hook up a fuel pressure gage?

 

I've also been noticing a bit of a loss of top end lately. I was wondering if the banjo bolts that the 2nd gen guys use on their VP44's would work on the banjos on the fuel filter. The one that's tapped for a gauge port would be real slick.<br><br>As for the pressures........does anyone know what the min/max fuel supply pressure TO the VE pump is supposed to be? (I'm not looking at the factory spec for lift pump pressure, as that's probably based on the fuel flow rate for 160hp) Reason being is that if I chose to run a seperate electric pump, the pressure would have to be adjusted accordingly. Don't want to blow any seals in the VE <br><br>Cheers,<br>Sean

 

The Carter pusher pump I am running from PDR is 7psi.<br><br>Mike

 

Yes, the tapped bolts for the 24v will work in ours. I installed one of Rods high flow banjos with the tapped head and put a schraeder port in the end. On the inlet of the filter I installed a regular head high flow bolt from Rod. I have a Matco Fuel psi test kit with numerous sizes of banjo bolts with the quick connect, so that is what was used to test the pump. The pump I pulled off that was stock, was an AC pump. The new pump from Cummins is a Carter.

 

My lift pump lever hasnt worked in a long time! I might need to get a lift pump. I have an electric pump a fella gave me for this purpose. I will have to have a look. Thanks for the heads up.

 

Went over to Massdiesel today to have my lift pump pressure checked. Hooked up the gauge to filter outlet banjo. Got 5 psi at idle and up to 6 psi at 2000rpm. Next we put the gauge through the driver's vent window and closed up the hood to take it out for a rip. So, driving down road, steady 40mph and 1700 ish rpm, got 4psi. Give a about 1/4 throttle, dropped down to 2-3 psi. At 1/2 throttle had barely 1psi. WOT sucked the gauge right down to ZERO psi in a hurry This is exactly what I suspected was happening. Will be getting the new lift pump installed this week. <br><br>Which brings me to another thing......has anyone here tried the updated piston type lift pump? Cummins part # 3936320 ? This is the one I intend to install.<br><br>Sean<br>

 

roughly how much did that lift pump set you back??

 

The lift pump I purchased was $74.00. It was the diapraghm type like what the trucks come out with.<br><br>Formula, I tried finding the part number for you, but had thrown the box away that it came in.

 

Monty, thanks for checking. ;D<br><br>The price I got from Cummins for the updated pump was about $130. AFAIK, this was the pump only. Will still need the gaskets and new fuel line to connect to the filter.<br><br>Sean

 

Sounds like it may be better to go with an electric pump then.<br> ??? just my .02 cents.

 

Perhaps......<br><br>Do you know of an electric pump that would work for this application? I've thought of a pusher setup, but I decided against it. Seems like it's only a way around a weak lift pump. Also I don't like the idea of feeding pressure to the old diaphragm pump.<br><br>Sean

 

I am sure there are more out there that will work, but alot of guys have had good luck running the 24v stock lift pump with a regulator. Let me look around and see what I can find.

 

Okay, I knew I had seen a different setup somewhere. I asked KTA about this awhile back. He said that a Weldon or an aeromotive pump replacement works best. Just be sure to regulate it to about 15psi as the shaft seal tends to leak with more psi than that. Also said that the 24v pump will not hold very good wide open throttle pressure.

 

Well, Just looking at Weldon and Aeromotive pumps and regulators......Weldon is out, too much $$$ Aeromotive looks nice, but there are several options...I'll post links to a few....<br><br>http://store.summitracing.com/partde...rt=AEI%2D11203<br><br>http://store.summitracing.com/partde...57#largerimage<br><br>What type of regulator should be used? Should it be of the bypass type that returns the unused fuel to the tank? Or is a non-return type regulator good? Where should the regulator be located? <br><br>Most importantly, all of these pumps and regulators are for gasoline. Will diesel fuel have any adverse effects on the seals, mechanisms etc?<br><br>Sean