Pusher Pump Reply
I cut and pasted what I consider good information on this mainly from Steve St Laurence.
Pusher lift pump installed - lift pump demon is slain (hopefully) Steve St. Laurent
I got my pusher lift pump installed this weekend and it's working GREAT! I bought a kit from Enterprise Engine Performance (
http://www.enterpriseengine.com ) for about the same cost as a replacement stock pump from Cummins. My fuel pressure gauge is now pegged beyond 16 psi and never goes down even under sustained WOT. The pump is in series along with the stock lift pump to feed it with fuel so that it hopefully will last longer as well as maintaining pressure. Installation was easy, only thing I did different from what Enterprise is doing is that I am running the pusher pump off of a relay whereas they are running them straight off of the existing power supply at the lift pump. After studying the schematics I was concerned about increasing the load on that circuit at all.
What I did was scotch lock to the red wire at the stock lift pump (on the lift pump side of the harness, not the engine side - in case of any problems it's easier to replace the lift pump harness than the engine one) and ran that to the switch side of a 30 amp (20a should be plenty) relay and then ran another wire from the other side of the switch to ground. Then I ran a wire from the fused side of the battery post in the PDC under the hood through a 20-amp fuse and then to the relay, then ran another wire (I used 12 gauge for all the wiring) from the other side of the relay to the pusher pump. I ran the wire inside of the existing wire loom that runs down the outside of the driver’s side frame rail.
To mount the pump itself I freed the feed line (bottom line) from the frame rail (2 bolts and clamps) and then used a pipe cutter to cut the line at the front (you can see the front cut in the picture, the back cut was just to the rear of the bend in the line). Then I used a small deep well socket and an extension to bend the line out slightly and chamfered the inside of the lines to remove any burrs and cleaned out any shavings in there. Then I put the clamps back on (the rear clamp will only have the return line attached now). I then marked the holes for the bracket. I cut up a bicycle inner tube to make a rubber isolator to keep noise from transmitting through the frame. I used the supplied self-tapping bolts and put the bolt through a lock washer first, then through a small piece (1" x 1") of inner tube, then through the bracket, and then through another piece of inner tube, then through the frame. On one of the mounting bolts I attached a small wire lead to connect to the negative terminal on the fuel pump. Then I put the supplied brass fittings into the fuel pump, and mounted the fuel pump through the supplied rubber grommets (I did have to add one extra washer on each of the studs so the pump was tight). Then used the supplied hose to connect to the fuel lines and hose clamped them at either end. Lastly, I connected the wire coming from the relay to the positive terminal on the pump.
Then I primed the system by turning the ignition on and bumping the starter to run the pumps (you will hear the pusher pump if it's working) several times. Then cranked her up! WHOOSH - fuel pressure gauge pegged! You can barely hear the pump operating when at idle but once rolling you can't hear it. Hopefully this will be the answer to my continuing lift pump problems (I went through 4 stock lift pumps in 60,000 miles). A big thank you goes out to Enterprise for researching this pump with Carter and coming up with a solution that's easy to implement!
Talked with Doug at Enterprise today and they are going to incorporate the relay setup into their kit. They will be providing the relay, fuse, and a wiring harness all labeled - they'll have the complete kits ready by the 9th of July.
I just ordered the kit from Enterprise. They said they are just waiting on the Relays and wire harness, which should be done by the end of the week. He said it should ship Friday. The cost was $150. 00 plus shipping. Not a bad deal considering it comes with everything you need. EMDDIESEL
New OEM Lift Pump from Carter The part number will be a P74213 and you will be able to get it from your loco auto parts store (that handle's the carter line) like NAPA, PEP BOYS, etc. I am still waiting for a price. Cummins sells them for $150 now. I know I got my Carter pusher (4070) at Napa for $90 at it's a very similar pump. It's low pressure/high volume though.
Above is Carter (SummitRacing P/N CRT-P4601HP $85. 95).
With a free flow of 100 gallons per hour and 14-16 psi of fuel pressure, a Carter electric fuel pump will keep up with any carburetor. Racers will appreciate the 3/8 in. inlets and outlets and low 4. 5 amp draw, too.
CARTER
Electric Fuel Pump P74213 98-02 1
The above from the Carter catalog Federal Mogul site is the actual factory transfer # supplied to Cummins or Dodge. It is CRT-P74213 in the Summit Racing catalog for $161. 39.
Advanced Diesel Technology (
http://smokindiesel.com/) has a complete fuel system kit. No hassle searching hard to find parts. It comes all in a box! Price is very reasonable, slightly more than buying the two pumps alone!
I've installed a pusher pump several weeks ago. It's a carter like yours. From what I see on the picture you've used a rubber hose from the tank to the pump. The curve you have can kink. I've used a piece of copper pipe 3/8" ID that I've welded to one of the inlet's provided with the pump.
Also, double clamps isn’t a bad idea... .
BTW, got all the stuff from ADT at a VERY reasonable price!
Marco. __________________
Marco/M. A. D. ECM's
I don't have a kit number but if you contact Enterprise and ask for the 24v pusher pump kit they'll know what you are talking about - they are not a huge operation, most likely Doug or Loretta will answer the phone. The only thing I had to buy outside of their kit was the relay and wire (I had an old bicycle inner tube lying around and also had the crimp connectors to hook to the relay) and today I picked up four hose clamps to double clamp all the fuel line connections.
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