Help! Something seriously wrong
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Re:Help! Something seriously wrong
[quote author=Stamey link=board=4;threadid=15586;start=15#147551 date=1055205837]<br>Seems like the pusher pump is a waste of time. Earlier you said that you had negative fuel pressure. I understand that it may help the stocker, but it just seems like installing that was all for not since it didn't do much good when it counted. My truck ran fine with a bad stock lift pump. I only found out about my bad lift pump when I went to check the pressure. It had zero, but the truck still ran, until I broke the vacuum of the VP44 when I opened the test port.<br>I could understand if the pusher helped by keeping the pressure up around 4 psi or better, but it did NO good in this situation.<br><br>Chris<br>[/quote]<br><br>Good points. What's weird is that I did have positive pressure the next time out, which was about 15 idle, but then dropped to about 4 to 5 when hitting light pedal. That is true that I had negative fuel pressure after getting home and checking it though. I would agree that the pump probably didn't do much good if any now that you brought that back up. Something I didn't think about in my last post. I wonder if a Holly blue is in my future or something. 
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From: Branchville, Alabama
Re:Help! Something seriously wrong
[quote author=Jack Thorpe link=board=4;threadid=15586;start=15#147415 date=1055180794]<br>[quote author=Haulin in Dixie link=board=4;threadid=15586;start=15#147408 date=1055179473]<br>[/quote]<br><br>Funny thing is that I just got done calling around to parts stores, and there is only ONE store that I could find that has crush washers. They only have the copper ones.<br>[/quote]<br><br>The only source that I have found is Cummins. If you don't have a cummins dealer around you I can drop a few in the mail for you. If you need them just let me know.
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From: Powhatan, Virginia
Re:Help! Something seriously wrong
[quote author=StakeMan link=board=4;threadid=15586;start=30#147572 date=1055209603]<br>Pusher pumps won't push through the stock lift pump.<br>[/quote]<br><br>I always wondered about that. I have ahd a situation where I was able to draw fuel through the stock electric in-tank fuel pump for an 86 Ford. I put the tank in my 82 Ford and the stock mechanical fuel pump actually sucks fuel through it. I think this was just a fluke though, because it's really rare to get th epump rotor to line up perfectly to allow flow through, if it's even possible.<br><br>Jack, since the pusher pump won't help if the main goes out, you might consider a bypass deal like I did. If my Holley Blue ever fails I can actually go back to the old fuel system by installing one banjo bolt, and replacing the fuel line at the tank.<br>This is how I did mine, if you want ideas.<br>http://www.Stamey.nu/Truck/FuelPump.htm<br><br>Chris
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From: Austria Europe
Re:Help! Something seriously wrong
Stamey: I had a pusher pump setup for some time nad the pusher worked for me- even when the stock pump failed I had a little positive pressure up to WOT on the pusher alone. Fuel can get through a rotary vane pump because if the pump motor is stopped the vanes are not forced towards the outside. <br><br>Jack: I've got a Holley Blue on the frame rail- works for me. <br><br>AlpineRAM
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Re:Help! Something seriously wrong
Well, I put the new pump in tonight. Thanks to Don Ramer and Joel Richards for getting me the pump since Cummins wasn't going to be able to get me one on time. Interesting story here though. Looks like my stock lift pump wasn't completely bad. It was the Stanadyne fuel manager pusher pump!!! After I put the new pump on, I was still having pressure problems just like before, but not as bad. Serious enough to be a problem though, 5 psi WOT. <br><br>So, I took the Stanadyne pump off, and bypassed it with straight line, and presto, 18 psi idle, 12 WOT and 10 WOT level 5 on comp. SOOOOOO, I guess I'll return the Stanadyne, but I don't think I'll be putting another one back on. I have a permanent pressure gauge on the way, and thanks to Don, I learned a LOT about fuel systems through this whole ordeal. <br><br>I'm keeping the old pump as a backup in case this one goes by by on me, until I figure out what I'm going to do. Tell ya what, this whole bombing thing can get time consuming, so I'm going to run without the comp again until I can get my fuel issues solved. <br><br>Thanks for all the help guys. I appreciate it.
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Joined: Sep 2002
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From: Claremont, Virginia
Re:Help! Something seriously wrong
I was considering the larger pick up tube that Banshee had and mounting two stock pumps back at the tank. Haven't figured out what else I want to do yet. Maybe a 1, 2 or both pump set up switch too.
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From: Silver City NM
Re:Help! Something seriously wrong
For what it's worth..... This is what I do. I install a Carter <br>15PSI 100GPH Pump that is very similar to our stock lift pumps.<br><br>It is mounted to the outside of the frame next to the Fuel tank. Then Just hook a Hose from the pump to the tank outlet after unhooking the oem suction line to the lift pump. Then I run a High quality fuel rated Hose to the inlet side of the filter on the engine. Wiring is done by running 14 gauge wires from the stock pump harness by "T" taping after it is unplugged from the oem pump. <br><br>The end result is Reliable OEM fuel pressure. IF the pump fails you pull in to a Napa store and change it right in the parking lot with a Pair of plyers and a screw driver.<br><br>Benefits of this system. <br><br>1. Inexpensive $125 (Pump) or Less for a Pump that delivers Stock level pressures with High Horse Power Flow rate.<br><br>2. Easy to Find! (Napa) <br><br>3. Easy to change. less than ten minutes.<br><br>4. Will it Deliver enough fuel???? With a Drag Comp and Don M's Mach 6.5 Injectors (150-170?+ HP) Pressures are above 7psi-10psi at WOT. and 13-15 at idle.<br><br>5.It's actually a ready made backup system. If you need too simply hook up your stock line at the tank. (EASY!). Then hook the front line back to the filter inlet. Then PLug back in the OEM Pump's connector and then it's stock for your trip back to the dealer.<br><br>MORE Info. Our stock Carter pumps are good BUT They Hate the Long Suck from the Tank. One Example is on my customers trucks that always have full tanks maybe with a Extra tank in the BED. Lift pumps last 100,000+ Miles.<br><br>On Customers trucks that don't refuel until below 1/2 or 1/4 tank the pumps average 30,000 or less.<br><br>When I installed the first few carters on the frame as pushers I would add a filter before the pump to help keep the Pump clean.... But even with regular filter changes the pumps were still failing at 30,000-80,000 miles. So I removed that very small suction restriction(My Pre Filter) and not ONE Pump has failed yet. <br><br>IN short these pumps are great as a pushers as most pumps are. Cummins merely mounted them on the engine because of concerns of the OEM using the CTDs not suppling a good Fuel feed. These 5.9CTD's are Designed and Advertised as a Complete and ready to run Power plant that a OEM can just drop in. Add a Fuel Line, Coolant Lines, 12Volt Battery source, simple Starter Key switch, adjust the OEM's requirement for HP,Torque and Rpm spec into the computer and Bingo they are ready to go. <br><br>(Except for dodge --- Who wanted their own Non adjustable computer, Cheaper exhaust manifold ETC!).<br><br>Kurt..... P.S. I have found the Carter HP pumps even cheaper!!
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