Dodge Cummins Diesel Forum banner

1 - 20 of 21 Posts

·
Registered
Joined
·
162 Posts
Discussion Starter #1
sorry for another lift pump question guys. so i bought a 2002 dodge with 80k on it and i just installed my edge juice w attitude and i noticed i have a remanufactured vp44. at first i thought great, they already fixed the common fuel problem. well after install i bleed system and it fires up perfect. idle pressure is 10 but if i stomp on it itll go down to 1psi... not good. so my question is if it is normal for it to go to 1psi with a bad lift pump. and whats weird is that i was able to bleed the system fine which made me think the lift pump was working but maybe not...? could it be something else? thanks a lot and sorry again for another one of these questions i did research it a bit

-Brad
 

·
Skrew- EPA CARB OPEC PETA
Joined
·
1,577 Posts
it could possibly be a lift pump. when mine went out it was intermittent.
 

·
Registered
Joined
·
162 Posts
Discussion Starter #3
oh okay. dumb question but where is the lift pump? i think im gonna get a fass 150 and stop worrying about it. gotta limp around for a while till i get some money to get it.
 

·
Registered
Joined
·
1,093 Posts
On the block directly behind the fuel filter is stock. If not there its a retro in the tank.
 

·
Skrew- EPA CARB OPEC PETA
Joined
·
1,577 Posts
you can go with the FASS or AirDog (my choice) both are good and have lifetime warranties. What do you have done to your truck? Chip, intake, exhaust, injectors, turbo, etc.?
 

·
Registered
Joined
·
162 Posts
Discussion Starter #6
just bhaf sawed off muffler while waiting for my 5" to arrive and edge juice. thats all now. i plan to do more though
thanks
 

·
Banned
Joined
·
393 Posts
That Edge on the higher levels would drain your fuel pressure. I had an 04, that i had a Flashpak on, and it went out within 10,000 miles, and i never ran it hot either!! AirDogs are more reasonably priced!!
 

·
Tech Specialist
Joined
·
725 Posts
I agree. I'd turn that Juice down for a while until you get the fuel pressure up and steady. You might want to check out Glacier's Walbro kit. The Walbro pump won't flinch even on a hard Juice run. Hope this helps.
:thumbsup
 

·
Registered
Joined
·
258 Posts
I can second the Walbro, and a lot of people really like the fass and airdog systems. Either way, I would go ahead and invest in and aftermarket pusher pump. I went through two stockers and finally got tired of replacing them. I would have saved money just buying the aftermarket one to start with!
 

·
Tech Specialist
Joined
·
1,890 Posts
I'll Cheerlead for the Walbro as well :hyper:

Nobody has mentioned it, so I will.

If you have a loose connection on the suction side of your pump, or a crack, or drawing air somehow, it MAY cause this problem.

Check all the connections back to the tank from the pump, if you have an external pump (Outside the tank) If you have a cracked siphon tube, well, let's cross that bridge if we get there.
 

·
Mopar1973Man.Com
Joined
·
26,259 Posts
Go big or go home... Get a AirDog lifetime warranty and filters down to 2 micron and has a better water separator than stock. Pumps at 150 GPH.. It aslo comes with a full fuel line kit with draw straw. (Vulcan Big Line! 1/2"):thud:

Here is my write up...
AirDog Fuel Pump

 

·
Registered
Joined
·
162 Posts
Discussion Starter #12
thanks for all the input guys. ill look check out all of the lines when i get a chance.i don't think its the higher power levels because at level three its still doing it if i'm like 2/3 throttle
 

·
Registered
Joined
·
162 Posts
Discussion Starter #13
isnt it weird that the lift pump would push the air out of my system but it wont pump fuel to the vp44 when running?
 

·
Tech Specialist
Joined
·
1,890 Posts
I could be mis-interpreting your post, so instead of answering your question that I don't really understand, I'll try to explain what I meant by my post.

Let's suppose for the purpose of this discussion, you have a crack, or an air leak in the supply side of your pump. When you fire up your truck, you might not notice it because the fuel demand on the pressure side of the pump is small (Or minimal). Truck runs normally, might even be able to supply the truck at partial throttle, no problem.

Once you begin fueling a little heavyer, it is now easier for your pump to suck air through the crack or leak. Now, you are suplying more air than fuel and your problem rears it's ugly head.

When you are talking about different levels of programming, and a problem such as this, the problem would most likely surface earlier on the heavyer fueling programs, but a discernable difference may not be readily apparent to you.

Clear as mud? :lol3:
 

·
Tech Specialist
Joined
·
1,890 Posts
Go big or go home... Get a AirDog lifetime warranty and filters down to 2 micron and has a better water separator than stock. Pumps at 150 GPH.. It aslo comes with a full fuel line kit with draw straw. (Vulcan Big Line! 1/2"):thud:

Here is my write up...
AirDog Fuel Pump


Just curious how quick you could get a replacement pump if yours failed on the side of the road in (Pick a small city), Idaho?

All the pumps mentioned are Gerotor style pumps, proven design and reliability.

But, they are electro-mechanical, and failures do happen. I carry a spare pump with me, My 2 pumps and spare probably cost less than one of your pumps cost, but even if carrying a spare isn't an option, the Walbro is currently more available than the FASS, Airdog, or any other performance lift pump.

The main thing is, what's right for you or me, may not be right for someone else. If someone spends alot of time driving in remote locations, then availability in the event of failure may weigh pretty heavy in their decision.

Sometimes it's cost that plays the trump card. Sometimes it's performance.
I'm comfortable with what I have, and you are with what you have.

All we can do is inform others why we went the way we did, and if the shoe fits, they will wear it.

P.S. I get 150 GPH out of my setup, not that I or ANYONE ELSE could ever actually USE that much fuel! :lol3:


Here's a link to my install:

http://www.cumminsforum.com/forum/3...o-gfs-392-install-pics-allot-information.html

I only add it as an option, for those looking for one.
 

·
Registered
Joined
·
435 Posts
Just curious how quick you could get a replacement pump if yours failed on the side of the road in (Pick a small city), Idaho?

All the pumps mentioned are Gerotor style pumps, proven design and reliability.

But, they are electro-mechanical, and failures do happen. I carry a spare pump with me, My 2 pumps and spare probably cost less than one of your pumps cost, but even if carrying a spare isn't an option, the Walbro is currently more available than the FASS, Airdog, or any other performance lift pump.

The main thing is, what's right for you or me, may not be right for someone else. If someone spends alot of time driving in remote locations, then availability in the event of failure may weigh pretty heavy in their decision.

Sometimes it's cost that plays the trump card. Sometimes it's performance.
I'm comfortable with what I have, and you are with what you have.

All we can do is inform others why we went the way we did, and if the shoe fits, they will wear it.

P.S. I get 150 GPH out of my setup, not that I or ANYONE ELSE could ever actually USE that much fuel! :lol3:


Here's a link to my install:

http://www.cumminsforum.com/forum/3...o-gfs-392-install-pics-allot-information.html

I only add it as an option, for those looking for one.

I got one the next day even though that wasnt the issue, buying something thats bolt on (for people that are not mechanics) is alot more simple than going and finding all these random pieces and parts and raping alot of things to install it and make it work.

Your setup is killer, I like it alot but Im not good at fabricating things and the Fass and AirDog almost anyone can install.
 

·
Tech Specialist
Joined
·
1,890 Posts
I got one the next day even though that wasnt the issue, buying something thats bolt on (for people that are not mechanics) is alot more simple than going and finding all these random pieces and parts and raping alot of things to install it and make it work.

Your setup is killer, I like it alot but Im not good at fabricating things and the Fass and AirDog almost anyone can install.
NP, man! I'm not knocking your setup, or choices whatsoever! :thumbsup

Just a couple of points to add (Well, it started out as a couple, anyways! :rof:

They DO make a Kit for the Walbro.. GDP is one who sells it, and I've seen it elswhere in my internet travels, but they look remarkably alot like GDP's kit. :w:

A couple of tees, and a few fittings, and ANYONE capable of installing one of GDP's kits, or a FASS or an Airdog, can install a second Walbro, No Problemo.
Presto! A platform that is expandable and will grow with you and your mods!

I only piece together because:

1). I LIKE custom!

2). I can do Custom for the price of kit, which is like paying myself for something "A little nicer" on the truck.

3). I'm actually trying to SHOW people it isn't as difficult as it might be made out by those selling kits, or those installing them.

In closing, don't sell yourself short.

One thing I don't see allot of here that I see on some of the Jeep boards I frequent is request for help wrenching. We called them "Wrenching parties", and they were especially helpful in familiarizing those who weren't "Completely comfortable" tackling an install on their own. So they would post up, preferrably in their "Local Board" section (For example, mine would be Arizona.) for help from people who may have already done that mod.

Win. Win. Someone got to help someone, and someone who needed help, got the help they needed. And BONUS!! Everyone got to hang out together, and get to know one another.

This fostered a "Pay it forward mentality"... If you got help, try to help others, it helps the community.

Disadvantage is sometimes, experienced people weren't available to help out as soon as you were. But, then again, for Pizza and Beer, alot of cool Jeeps were built!

No reason it couldn't be like that here.

Have a GREAT NIGHT!! :beer
 

·
Cummins Whisperer
Joined
·
796 Posts
Do you know when the fuel filter was changed last? Might be a good place to start.
 

·
Registered
Joined
·
162 Posts
Discussion Starter #19
yeah the filter could be a problem. I've never changed it but i just bought the truck so ill try that. by the way guys thanks a lot for all of the help. this is a really cool forum with lots of nice people. im glad to be part of it
 

·
Tech Specialist
Joined
·
1,890 Posts
Do you know when the fuel filter was changed last? Might be a good place to start.
At least you could make it SOUND more complicated!! :T:

Good call. :thumbsup

Sometimes, you kinda assume things you shouldn't, I guess...
 
1 - 20 of 21 Posts
Top