liftpump replacement

[barbwire]

Actually Joe, they have had a failure. Mine was dead within the first month of running it. I posted about it, Keith replied, but never offered to make it right. I didn't bother pushing the subject any further. If you do a search you can see were I took pictures of the fuel pressure sucking down to zero at WOT with no performance add on. (stock form)

You mean to say that you have enough money to spend hundreds of dollars , "and not push the issue"? If a legitimate claim, then I would say that Kieth is practicing poor business. Is there more to the picture that we are not seeing? Please fill us in. As i do not have money to burn

 

[Yo Hoot]

Here's a wild (and maybe dangerous ) idea. What about an inline oil cooler on the return fuel line to settle your temps down? A punctured cooler would be bad, but not as catastrophic as a oil line failure, unless you had it near an ignition source.

The Dmax has just such a thing.

 

[Gypsyman]

Yikes!



Gypsyman,

I'm amazed that the fuel gets hot enough to do such strange things to your pressures. This happens with just the stock system? It would be interesting to mount a temperature sender in the tank to see how warm it gets.

-Ryan

You would be suprised how hot the fuel being returned to our tanks is. The pressures delivered by our CP-3 generate a LOT of heat. I don't think it the fuel itself causing the pressure problems but a weak pump that has an even harder time as it gets hot. The lower you run your fuel levels in the tank, the less mass you have to dissapate the returned fuels heat. As an example, before I installed my "fill-up kit" I ran a few errands to burn a little more fuel out of the tank. When I removed my sending unit from the tank, approximately two hours after I had parked the truck, the fuel was still suprisingly hot.



Richard

 

[rbattelle]

Wow. Sounds like I need to seriously consider running a return line cooler of some sort. Richard, which of your pumps is weak? The new Aeromotive pusher, or do you mean the stocker?

 

[Gypsyman]

My stocker is the one that freaks out when the fuel temps get up there. The pump I have waiting on the bench is a 4601HP Carter. Just waiting on the fitting from Scotty.



Richard

 

[lmills]

You mean to say that you have enough money to spend hundreds of dollars , "and not push the issue"? If a legitimate claim, then I would say that Kieth is practicing poor business. Is there more to the picture that we are not seeing? Please fill us in. As i do not have money to burn

I first called him and was advised that the pump was not designed to be run with the TST box. At first I accepted that thinking it just didn't flow the volume. I posted a thread about it on the TDR, but didn't bash the product. I was simply looking for a better pump for my application. Keith replied with the same message, saying that it wasn't designed for the TST box. Then the next day while driving to work I thought I would check my pressures again at WOT with no power enhancement. This time it sucked the pressure down to 0 with the box turned off totally. I took pictures of the gauge showing the pressure falling till it eventually bottmed out. In the pictures you can see the TST remote off to the side. It is set on 0-0. So even with the box off it was pulling to 0. I never heard any more about it. I am still running the rest of the kit, just bought a better fuel pump.

 

[Gypsyman]

Lloyd,



I prefer not to deal with DD for the same reasons. What model of Carter came with the DD kit?



Richard

 

[lmills]

I am not trying to bash DD. The pump is a 4601. I just wish I would have had better luck with the pump. I honestly think the pump was junk when I put it on the truck. It wasn't nearly as loud as other Carters I have ran in the past.

 

[Gypsyman]

I just haven't had much luck with DD and thier attitudes. Just my personal experiences. Was the pump a 4601 or a 4601HP?

 

[lmills]

4601 HP series

 

[Gypsyman]

It's too bad Keith didn't step up to the plate. Both of my running partners are using the 4601HP and having no problems. Seems you're correct about it being bad right out of the box. Glad to see you have something that works for you now.



Richard

 

[RDupree]

fuel pump

i think what you have is air in the fuel. hot fuel will foam more than cold fuel,and i think your pump is mounted up near the engine,so,its sucking the fuel instead of pushing it,sucking the fuel will cause it to have air in it,thats why the fass works so well,it mounts near the tank,and has a return line to send back any air that it gets. hears a simple testut a clear line between the pump and the tank,somewhere that you can see it. run the truck till the fuel is hot,then watch the line for air bubbles. and the fuel cooler needs to be between the fuel pump and the motor.

 

[rbattelle]

I've got just an adapter coming from Scotty

Richard

Me too! Oo. Just got off the phone with him (great guy to deal with). He's dropping me his lift pump replacement fitting, which is 3/8 NPT with a 1/2 Pushlock connector. He also sells a complete lift pump replacement kit, if that's yer fancy.





-Ryan