carter p4601 - Dodge Cummins Diesel Forum
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post #1 of 14 (permalink) Old 03-23-2010, 08:45 PM Thread Starter
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carter p4601

hey guys i got to looking under the hood of my truck and the header has been tapped for an egt gauge and i seen a piece of velcro that held the chip on the fuse panel so i knew there had to be some type of fuel system. heres what i found:


carter- p4601hp p/n
404-500hp or equivalent
p/n 152-876

all i know about these pumps is they are somewhat like the holley or summit pumps. it's been spliced into the fuel line right in front of the tank and has what looks like another pump right before the vp.

my question is would this be safe or is it a deff. i have to get a fass or airdog etc. with any more mods than is in my sig?also would anyone have a pic of a stock carter pump on the firewalll?


thanks in advance


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post #2 of 14 (permalink) Old 03-23-2010, 08:52 PM
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A fuel pressure gauge would be a good place to start. If it has 2 fuel pumps in line I would eliminate one of them. Then if you have good fuel pressure call it good.

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post #3 of 14 (permalink) Old 03-23-2010, 09:10 PM
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i would suggest a airdog/fass or raptor do it rite the first time around!

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post #4 of 14 (permalink) Old 03-24-2010, 12:09 PM Thread Starter
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i know the fass/airdog is the way to go but the way i see it if it already has a better carter pump than stock and will hold a consistant 15psi at WOT and it isn't broke dont fix it. would it hurt anything running two pumps? i've heard powerstroke people running two stock pumps. different animal but still.

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post #5 of 14 (permalink) Old 03-24-2010, 07:41 PM
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Quote:
Originally Posted by harperky View Post
i know the fass/airdog is the way to go but the way i see it if it already has a better carter pump than stock and will hold a consistant 15psi at WOT and it isn't broke dont fix it. would it hurt anything running two pumps? i've heard powerstroke people running two stock pumps. different animal but still.
You answered your question right there. If you have good fuel pressure that stays at safe levels through the RPM range then run what you got till if fails and re-evaluate your needs at that time. For now, get a FP gauge and see where you are at.

"Pusher" pumps were common back in the day and worked just fine.


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post #6 of 14 (permalink) Old 04-10-2010, 06:59 PM Thread Starter
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i have 26psi at idle 16 at WOT. it just started dropping 10psi at WOT today. also when it used to smoke it was coal, now it looks kinda chalky. still black but like it's not it was. anybody had any experiences like this?


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Black: 02 2500 qcsb.
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post #7 of 14 (permalink) Old 04-10-2010, 09:12 PM
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If your at 10 psi at WOT now check one of your lp's and see if one quit. Replace fuel filter. I had a problem like this and the stock LP elec. plug lost power making me run on one pump. I had run 14 gauge wire to the back pump on a seperate circuit so I just spliced the two together on the side of the road.

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post #8 of 14 (permalink) Old 04-10-2010, 09:18 PM
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Like everyone here has said as long as your maintaining adequate fuel pressure your safe. Just be super aware that it is way cheaper to replace the fuel lift pump than the injector pump.

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post #9 of 14 (permalink) Old 04-11-2010, 01:29 AM Thread Starter
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im at 16psi WOT 26 at idle. it is dropping 10psi at WOT. it was only dropping about 5psi now it has started dropping 10? what could have cause such a drop all the sudden as well as the chalky smoke?

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post #10 of 14 (permalink) Old 04-11-2010, 01:38 AM
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Fuel Filter clogged up.

One of your LP quit and its restricting the other one which will probably make it go out as well soon.

Those are my two suggestions.

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post #11 of 14 (permalink) Old 04-11-2010, 02:59 AM
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16 is not bad though some of these guys are wishing they had that at idle. The chalky smoke...is it white?

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post #12 of 14 (permalink) Old 04-11-2010, 09:44 AM
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I have to agree if it ain't broke don't fix it,,, now I just put a new carter pump on my truck (its the one that is supost to be a higher grade than original) it works great... 20 psi at idle and 12 wot..... now I love the aridog and fass but let's face it we arenot all roleing in the money and can put a 600 pump on it ..... for the smoke... if you are at a dead stop does it smoke black and get grey as you get on it or just stay chalcky the whole time

2002 blue dodge 3500... 5 speed.. straight pipe ..BHAF.. quadzilla xzillarader.. raptor pump
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