lift pump and cp3

rich2500 · 02-07-2006, 04:02 AM

I see alot of new cummins owners confused about where the lift pump is located and confused between the lift pump and cp3 injection pump.

on 03 thru 04.5 trucks the lift pump is mounted on the fuel filter housing in the engine compartment,on the 05 and 06s the lift pump was moved into the fuel tank.The lift pump is the pump that supplies the cp3 injection pump with fuel.The cp3 is the high pressure pump that supplies the fuel rail with fuel.The cp3 is located on the right side of the engine if looking at it from the front it has three fuel lines on it, one supply line, one return line and the line that goes to the fuel rail.The cp3 is the same pump and located at the same place on trucks from 03 thru 06.

__________________
2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

Blackout · 02-10-2006, 04:11 AM

To add to that:

CP3's were on 2003 and 2004's.
CP3S3's started in 2004.5 to current.

__________________

pipman · 02-10-2006, 05:10 AM

Quote:

Originally Posted by Blackout

To add to that:

CP3's were on 2003 and 2004's.
CP3S3's started in 2004.5 to current.

Just curious, but what's the diffrence between the two?

__________________
2003 Dodge Ram 3500 Dualie SLT, 5.9L HO CTD, Stock 48RE, 2 WD, Quad Cab, Turbo Silencer Ring MIA, Swiss Cheese Air Box w/ K&N Drop In. Trying to decide on some real bombs!!

02-10-2006, 07:04 AM

Quote:

Originally Posted by pipman

Just curious, but what's the diffrence between the two?

I would like to know the difference as well?

Blackout · 02-10-2006, 10:49 AM

The newer pumps are "suppose" to be improved and flow more.

From what I can tell by peoples dyno numbers, they do.

__________________

02-10-2006, 11:00 AM

Quote:

Originally Posted by Blackout

The newer pumps are "suppose" to be improved and flow more.

From what I can tell by peoples dyno numbers, they do.

Cool......the lil woman's truck has the higher flow unit

MR4WLR · 02-10-2006, 12:25 PM

The CP3 also has a "built in" lift pump, the Dmax's don't use a seperate lift pump on there common rail system.

__________________
Corey Ritter - Amity, OR
'04 Patriot Blue SRW 3500 QC 4X4 Laramie, 6spd, HO, Edge EZ, TST PowerMAXCR, Smarty, SPS 66, Rip's 4", AFE PG7 W/torque tube, FASS 150, Superlift leveling kit, Ride Rite's w/onboard air, Line-X. Torklift camper tie downs, fuel vent mod, CB, GPSmap 168, Buckstop/Warn 12,000 lb, KC Daylighters, MTL w/prolong in trans, Haisley DD, DiPricol gauges and Quad Commander. 77K
513/1043 Fast Specialties DDD 4-15-2006 TST-EZ stack, Quickest 1/4 mile ET 13.949 @ 96 MPH @ PIR
Hauls Lance "Lite" 1025 @4klbs
Wifes truck '98 Intense Blue 12V QC LB 4X4 Auto

rich2500 · 02-10-2006, 05:34 PM

the weep hole supposedly was relocated on the cp3s also to eliminate the leak problems that have occured on the cp3

__________________
2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

02-10-2006, 06:33 PM

Rich........tell us more about this weep hole

Superduty · 02-10-2006, 07:50 PM

"The newer pumps are "suppose" to be improved and flow more."

That is incorrect. All the CP3s have the same flow.

__________________
In Cummins we trust.

'99 Ford Superduty CC with 05 Cummins 325/600, BHAF, Donalson M090544 and ZF6 transmission. Tone ring mod.
Walbro 392 lift pump. 2 micron fuel filter on engine with filter lid pressure gauge.

I've been running a Walbro 392 since 2000. How long did your fuel pump last ?

My diesel blog:
http://common-sense-diesel.blogspot.com/

02-10-2006, 07:59 PM

John.....can you tell me the difference between the CP3's on the 2003 and 2004's and the CP3S3's on the 2004.5 to current.

They updated the # so why??? what does the "S3" stand for....series 3 maybe???

rich2500 · 02-11-2006, 04:44 AM

I have the cp3 on my truck and a brand new cp3s in a box in the garage that I bought because of a leak on my cp3 when I get around to doing the swap I will do a comparison to see if I can tell exactly what was changed.

__________________
2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

02-07-2006, 04:02 AM	#1 (permalink)
rich2500 Tech Specialist Join Date: Jan 2006 Location: Pa. Posts: 387 rich2500's Truck Pics	lift pump and cp3 I see alot of new cummins owners confused about where the lift pump is located and confused between the lift pump and cp3 injection pump. on 03 thru 04.5 trucks the lift pump is mounted on the fuel filter housing in the engine compartment,on the 05 and 06s the lift pump was moved into the fuel tank.The lift pump is the pump that supplies the cp3 injection pump with fuel.The cp3 is the high pressure pump that supplies the fuel rail with fuel.The cp3 is located on the right side of the engine if looking at it from the front it has three fuel lines on it, one supply line, one return line and the line that goes to the fuel rail.The cp3 is the same pump and located at the same place on trucks from 03 thru 06. __________________ 2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

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02-10-2006, 04:11 AM	#2 (permalink)
Blackout Cummins Fanatic Join Date: Nov 2005 Location: Southern, Indiana Posts: 145 Blackout's Truck Pics	To add to that: CP3's were on 2003 and 2004's. CP3S3's started in 2004.5 to current. __________________

02-10-2006, 10:49 AM	#5 (permalink)
Blackout Cummins Fanatic Join Date: Nov 2005 Location: Southern, Indiana Posts: 145 Blackout's Truck Pics	The newer pumps are "suppose" to be improved and flow more. From what I can tell by peoples dyno numbers, they do. __________________

02-10-2006, 12:25 PM	#7 (permalink)
MR4WLR Administrator Join Date: Feb 2006 Location: Amity, OR Posts: 3,752 MR4WLR's Truck Pics	The CP3 also has a "built in" lift pump, the Dmax's don't use a seperate lift pump on there common rail system. __________________ Corey Ritter - Amity, OR '04 Patriot Blue SRW 3500 QC 4X4 Laramie, 6spd, HO, Edge EZ, TST PowerMAXCR, Smarty, SPS 66, Rip's 4", AFE PG7 W/torque tube, FASS 150, Superlift leveling kit, Ride Rite's w/onboard air, Line-X. Torklift camper tie downs, fuel vent mod, CB, GPSmap 168, Buckstop/Warn 12,000 lb, KC Daylighters, MTL w/prolong in trans, Haisley DD, DiPricol gauges and Quad Commander. 77K 513/1043 Fast Specialties DDD 4-15-2006 TST-EZ stack, Quickest 1/4 mile ET 13.949 @ 96 MPH @ PIR Hauls Lance "Lite" 1025 @4klbs Wifes truck '98 Intense Blue 12V QC LB 4X4 Auto

02-10-2006, 05:34 PM	#8 (permalink)
rich2500 Tech Specialist Join Date: Jan 2006 Location: Pa. Posts: 387 rich2500's Truck Pics	the weep hole supposedly was relocated on the cp3s also to eliminate the leak problems that have occured on the cp3 __________________ 2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

02-10-2006, 06:33 PM	#9 (permalink)
Guest Posts: n/a	Rich........tell us more about this weep hole

02-10-2006, 07:50 PM	#10 (permalink)
Superduty Tech Specialist Join Date: Jan 2006 Posts: 397 Superduty's Truck Pics	"The newer pumps are "suppose" to be improved and flow more." That is incorrect. All the CP3s have the same flow. __________________ In Cummins we trust. '99 Ford Superduty CC with 05 Cummins 325/600, BHAF, Donalson M090544 and ZF6 transmission. Tone ring mod. Walbro 392 lift pump. 2 micron fuel filter on engine with filter lid pressure gauge. I've been running a Walbro 392 since 2000. How long did your fuel pump last ? My diesel blog: http://common-sense-diesel.blogspot.com/

02-10-2006, 07:59 PM	#11 (permalink)
Guest Posts: n/a	John.....can you tell me the difference between the CP3's on the 2003 and 2004's and the CP3S3's on the 2004.5 to current. They updated the # so why??? what does the "S3" stand for....series 3 maybe???

02-11-2006, 04:44 AM	#12 (permalink)
rich2500 Tech Specialist Join Date: Jan 2006 Location: Pa. Posts: 387 rich2500's Truck Pics	I have the cp3 on my truck and a brand new cp3s in a box in the garage that I bought because of a leak on my cp3 when I get around to doing the swap I will do a comparison to see if I can tell exactly what was changed. __________________ 2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,