are they being replace with something better and what are they replacing it with and how hard was the replacement<br><br>george

 

Why, is there something wrong with them.<br>

 

Diesel Dynamics has a kit out now using the carter 4601 and Wildcat Diesel is working on a system using the PE pump. I dont know if anyone has anything else in the works or not.

 

[quote author=Hummin' Cummins link=board=20;threadid=15882;start=0#149243 date=1055590931]<br>Why, is there something wrong with them.<br><br>[/quote]<br>The Carter lift pumps of previous years are a periodic source of annoyance, but 2003 is the begining of a new lift pump, so I would say that the jury is still out.

 

It is not very hard to install but be warned it is noisy. The trucks are so quiet now that at idle you can hear it sing. May try and remount it differently.

 

[quote author=Nevada link=board=20;threadid=15882;start=0#149374 date=1055637495]<br>The Carter lift pumps of previous years are a periodic source of annoyance, but 2003 is the begining of a new lift pump, so I would say that the jury is still out.<br>[/quote]<br><br>Naw, the jury is in on this one. The lifts on the 03 Cummins is every bit as lousy as the old one. :'( With an Edge EZ (~330 - 340 BHP), I've been able to drain the CP3 more than once. I've stepped up to -8 lines between filter canister and injection pump, and that seems to be keeping up with the demands of the CP3.<br><br>Rod

 

Hey Rod, you already know I don't have the high EGT with mine. Well it is also about impossible to get the thing to go below 4 psi, no mater how hard you get after it. Have 10 psi at idle and close to 9 going down the road.<br><br>EZ on level 4

 

[quote author=Hummin' Cummins link=board=20;threadid=15882;start=0#149243 date=1055590931]<br>Why, is there something wrong with them.<br><br>[/quote]<br><br>If one is running stock how long should factory one last? If It Ain't Broke, Don't Fix It!

 

[quote author=Push Rod link=board=20;threadid=15882;start=0#150145 date=1055850081]Naw, the jury is in on this one. The lifts on the 03 Cummins is every bit as lousy as the old one. :'( With an Edge EZ (~330 - 340 BHP), I've been able to drain the CP3 more than once. I've stepped up to -8 lines between filter canister and injection pump, and that seems to be keeping up with the demands of the CP3.<br><br>Rod<br>[/quote]<br>I maintain my assertion that the jury is still out. The old lift pumps were unreliable even in a bone stock configuration. I do not fault the factory systems inability to keep up with bombing, but it seems to be holding up for the stock trucks - so far.

 

[quote author=Mopar_Mudder link=board=20;threadid=15882;start=0#150245 date=1055871765]<br>Hey Rod, you already know I don't have the high EGT with mine. Well it is also about impossible to get the thing to go below 4 psi, no mater how hard you get after it. Have 10 psi at idle and close to 9 going down the road.<br>[/quote]<br><br>It appears as though the problems are a little on the spotty side. Some guys have trouble, and some don't. I'm beginning to wonder if its one of two things:<br><br>1) Geographical area. On the 2nd Gens, Canucks had a MUCH higher rate of failure than our southern cousins, quite possibly due to poorer fuel.<br><br>2) Those who tend to run their tanks a little lower on fuel. I rarely ever fill up until I'm just about at the E mark, and my lifts are always heading south.<br><br>Even under stock power, I've been able to draw my pressure down to 4 or 5 PSI at WOT, and my idle pressure was down to 9 (from 9.5) before putting the EZ on it. Diesel Dynamics and a few other performance shops have been seeing similar results. I'm keeping an eye on the situation, but I'd lay good bucks on it that Nipawin Chysler Dodge will be seeing some dead lift pumps on the bench within the next few months, even from stock trucks.<br><br>Rod

 

Rod, I thought I read somewhere that the new injection pump once it was primed, didnt really need the lift pump. The only time you really need the lift pump is priming the system, like when you change fuel filters and such. I know you do alot of research on these trucks, and was just wondering if maybe what I read was not true. I wish I could remember the source of the info. on the new inj. pump. Anyway, I haven't bombed mine (yet ;D) and I was hoping they solved that problem.<br><br> Cat Cracker.

 

For us newbies could someone define &quot;bomb&quot; and what it means to &quot;draw down you psi&quot; on the fuel system. So what? I am new to this diesel lingo and want to learn.

 

B.O.M.B. aka &quot;Better Off Modified Baby&quot; And just a word from the wise,once you start down the path of bomb-ing, forever will it dominate your destinty. But beware; bomb-ing will make your warranty dissapear faster than the headlights of that 6.0 litre your racing...Cat Cracker.

 

BOMB (Better Off Modified Baby). The lift pump provides fuel to the injection pump. If it fails to keep up with demand the injection pump can starve for fuel. With minor modifacations some people have had their fuel pressure drop down to zero and starved the injection pump enough to stall the engine. With the stock truck it may not be a concern as the jury is still out till people can start getting enough milage to tell the tale. If you start bombing then your quite possibly going to be addressing the issue.

 

[quote author=brillmtb link=board=20;threadid=15882;start=0#155390 date=1057070914]
For us newbies could someone define &quot;bomb&quot; and what it means to &quot;draw down you psi&quot; on the fuel system. So what? I am new to this diesel lingo and want to learn.
[/quote]

B.O.M.B. = Better Off Modified Baby. ;D
I can't imagine who dreamt that up.

Drawing down fuel pressure means you are taking the fuel pressure and possibly the supply to the engine to a less then safe zone.
I am not totally up to date on the common rail specs and requirements. I do know on the 2nd gens, low fuel pressure can lead to injector pump failure and lift [fuel] pump failures.
I drove Push Rods truck and saw the gauge blinking in a negative pressure situation...my guess would be negative might be vacuum? We all know that if you have one part pushing and one part pulling...both parts get stressed and one or both can fail/break. Like mentioned...time will tell.
I will still go to our -8 lines and possibly a different system then what is on the trucks now. Of course I plan to be my own warranty station and BOMB. ;D

People have already realized on the 3rd gens that the factory air box is barely adequate even for stock power...we may find that with other things on the trucks too.