CP3 timing and results - Page 2

mthisguy · 05-31-2007, 09:22 PM

Dont know why the link is messed up, but it's in the 3rd gen tech forum. Perhaps you need someone to help you do it. Or pay the dealer to do it for u, shouldnt take more than 1 hour.

__________________
06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

**WICKED DIESELS** · 05-31-2007, 09:31 PM

It is an event issue, the CP3 contains pistons and springs, as it is a rotary pump, the sound is backlash from the timing gears. You will be putting the injection pump into a preloaded relationship, in reference to the timing gears. This works and will make the tapping noise disappear!

__________________
http://www.wickeddiesels.com

http://www.modifiedcp3.com

Compound Turbo Kits S300/S400 Singles CP3's and mods Injectors Fuel Systems Coolant Bypass Kits Bosch Parts

emp1134 · 06-01-2007, 08:37 PM

I did this to mine and no more knock. engine sounds a lot quieter at idle now.
Thanks mthisguy for posting this.

__________________
2006 3500 Black Sport QC 4x4 G56 dually, Amsoil in everything w/bypass,SB CON OFE,Mag-Hytec on rear, pyro boost & rear diff temp gauges, AeroTurbine 4040, high idle, K&N cold air w/EaAU 4095, QUAD boost fooler, Rancho RS5K's, DS predator/puck,

:

mthisguy · 06-01-2007, 10:55 PM

Glad I could help.

__________________
06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

cj42 · 06-04-2007, 05:06 PM

I assuming that you guys are eye balling the degree's. Can there be any ill effects if you only move it 5-10 degree's ?

mthisguy · 06-04-2007, 07:22 PM

No the timing only changes the amount of backlash in the drive gears, doesnt change the engine operation at all.

__________________
06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

badvlvo · 06-04-2007, 09:45 PM

I may just try this tonight if it doesn't want to rain on me.

__________________
2004 2wd Quad Cab dually with things and stuff.

cj42 · 06-05-2007, 09:14 AM

I understand that it doesn't change the timing of the pump. Why do you have to rotate it 30 degrees ? Why can't you just move it 10 ? I haven't had a chance to try this yet but how much play is there in the gears ? .015- .020" of an inch ? Is there any way just to turn the gear until the teeth of the gears are in constant contact to get rid of the play ? I asssuming that if you rotate more then 60 degree's you can't hurt anything. Thanks.

mthisguy · 06-05-2007, 05:14 PM

It doesnt have anything to do with the gear timing, its the timing of the CP3's piston stroke in relation to the engines piston stroke. No you cant just move the gears without completely tearing down the front of the engine, the only thing you can turn is the pump shaft once its loose from the cam drive gear. 10 degrees might be enough but I doubt it, you have to basically put the CP3 pistons in a different postion, in a 360 degree circle 10 degrees isnt much change.

__________________
06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

cj42 · 06-07-2007, 01:03 PM

I did and no luck for me. If I get on it pretty hard and then back off but still give it light throttle I get knock still. This has been going on for 100,000 miles so I don't think its hurting anything but it is annoying. I have replaced my pusher pump with a glacier 392 pump, added 20 micron and a 2 micron filter(plus my stock fuel filter), replaced FCA,replaced cascade valve(overflow),replaced my injector with F1's and have tried every additive under the sun. I still think the problem is a timing issue and it caused by my ECM or something between the CP3 pump or what ever controls the fuel that goes into each injector. Anybody have any suggestions ? Thanks.

**jlibert** · 06-14-2007, 02:25 PM

My CP3 started making noise after I bumped the pressure up to about 40 psi at the inlet. It only makes noise when I'm below 1/8th tank of fuel. As soon as I fill up, the CP3 is quiet again.

GDMav · 06-20-2007, 12:56 AM

Quote:

Originally Posted by jlibert

My CP3 started making noise after I bumped the pressure up to about 40 psi at the inlet. It only makes noise when I'm below 1/8th tank of fuel. As soon as I fill up, the CP3 is quiet again.

I think the knock your hearing there is caused by air bubbles in your fuel. With only and 1/8th of a tank the suction hose isn't always below the level of your diesel.

__________________
2005- 3/4 ton, 4x4, NV5600, TST PMCR w/gauges, A-Pillar Boost Gauge, SPS 62/14, Glacier Diesel 392 Kit + factory 7 micron filter, Soon-Foumula1 Flux 1's

06-01-2007, 08:37 PM	#15 (permalink)
emp1134 Cummins Fanatic Join Date: Nov 2006 Location: Luling,Texas Posts: 186 Thanks: 0 Thanked 2 Times in 2 Posts emp1134's Truck Pics	I did this to mine and no more knock. engine sounds a lot quieter at idle now. Thanks mthisguy for posting this. __________________ 2006 3500 Black Sport QC 4x4 G56 dually, Amsoil in everything w/bypass,SB CON OFE,Mag-Hytec on rear, pyro boost & rear diff temp gauges, AeroTurbine 4040, high idle, K&N cold air w/EaAU 4095, QUAD boost fooler, Rancho RS5K's, DS predator/puck,:

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05-31-2007, 09:22 PM	#13 (permalink)
mthisguy Cummins Nut Join Date: Jul 2006 Location: Wyoming Posts: 319 Thanks: 0 Thanked 1 Time in 1 Post mthisguy's Truck Pics	Dont know why the link is messed up, but it's in the 3rd gen tech forum. Perhaps you need someone to help you do it. Or pay the dealer to do it for u, shouldnt take more than 1 hour. __________________ 06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

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05-31-2007, 09:31 PM	#14 (permalink)
WICKED DIESELS WICKED DIESELS Join Date: Dec 2006 Location: Bristol, Va Posts: 1,879 Thanks: 6 Thanked 35 Times in 23 Posts WICKED DIESELS's Truck Pics	It is an event issue, the CP3 contains pistons and springs, as it is a rotary pump, the sound is backlash from the timing gears. You will be putting the injection pump into a preloaded relationship, in reference to the timing gears. This works and will make the tapping noise disappear! __________________ http://www.wickeddiesels.com http://www.modifiedcp3.com *Compound Turbo Kits S300/S400 Singles CP3's and mods Injectors Fuel Systems Coolant Bypass Kits Bosch Parts*

06-01-2007, 10:55 PM	#16 (permalink)
mthisguy Cummins Nut Join Date: Jul 2006 Location: Wyoming Posts: 319 Thanks: 0 Thanked 1 Time in 1 Post mthisguy's Truck Pics	Glad I could help. __________________ 06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

06-04-2007, 05:06 PM	#17 (permalink)
cj42 Newbie Join Date: May 2006 Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts cj42's Truck Pics	I assuming that you guys are eye balling the degree's. Can there be any ill effects if you only move it 5-10 degree's ?

06-04-2007, 07:22 PM	#18 (permalink)
mthisguy Cummins Nut Join Date: Jul 2006 Location: Wyoming Posts: 319 Thanks: 0 Thanked 1 Time in 1 Post mthisguy's Truck Pics	No the timing only changes the amount of backlash in the drive gears, doesnt change the engine operation at all. __________________ 06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

06-04-2007, 09:45 PM	#19 (permalink)
badvlvo Cummins Fanatic Join Date: Aug 2006 Location: Carmel-by-the-Sea, California Posts: 161 Thanks: 0 Thanked 0 Times in 0 Posts badvlvo's Truck Pics	I may just try this tonight if it doesn't want to rain on me. __________________ 2004 2wd Quad Cab dually with things and stuff.

06-05-2007, 09:14 AM	#20 (permalink)
cj42 Newbie Join Date: May 2006 Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts cj42's Truck Pics	I understand that it doesn't change the timing of the pump. Why do you have to rotate it 30 degrees ? Why can't you just move it 10 ? I haven't had a chance to try this yet but how much play is there in the gears ? .015- .020" of an inch ? Is there any way just to turn the gear until the teeth of the gears are in constant contact to get rid of the play ? I asssuming that if you rotate more then 60 degree's you can't hurt anything. Thanks.

06-05-2007, 05:14 PM	#21 (permalink)
mthisguy Cummins Nut Join Date: Jul 2006 Location: Wyoming Posts: 319 Thanks: 0 Thanked 1 Time in 1 Post mthisguy's Truck Pics	It doesnt have anything to do with the gear timing, its the timing of the CP3's piston stroke in relation to the engines piston stroke. No you cant just move the gears without completely tearing down the front of the engine, the only thing you can turn is the pump shaft once its loose from the cam drive gear. 10 degrees might be enough but I doubt it, you have to basically put the CP3 pistons in a different postion, in a 360 degree circle 10 degrees isnt much change. __________________ 06 48RE megacab, not cummings equipped but Cummins powered. Edge Juice/Attitude, mod'd intank fuel pump, Fleetguard FS20000 fuel filter and external lift pump regulator, modified intake housing, Goerend tranny/billet input, GDP intake horn.

06-07-2007, 01:03 PM	#22 (permalink)
cj42 Newbie Join Date: May 2006 Posts: 10 Thanks: 0 Thanked 0 Times in 0 Posts cj42's Truck Pics	I did and no luck for me. If I get on it pretty hard and then back off but still give it light throttle I get knock still. This has been going on for 100,000 miles so I don't think its hurting anything but it is annoying. I have replaced my pusher pump with a glacier 392 pump, added 20 micron and a 2 micron filter(plus my stock fuel filter), replaced FCA,replaced cascade valve(overflow),replaced my injector with F1's and have tried every additive under the sun. I still think the problem is a timing issue and it caused by my ECM or something between the CP3 pump or what ever controls the fuel that goes into each injector. Anybody have any suggestions ? Thanks.

06-14-2007, 02:25 PM	#23 (permalink)
jlibert BROWNSDIESEL.COM Join Date: Jun 2007 Location: FRESNO Posts: 338 Thanks: 0 Thanked 11 Times in 10 Posts jlibert's Truck Pics	My CP3 started making noise after I bumped the pressure up to about 40 psi at the inlet. It only makes noise when I'm below 1/8th tank of fuel. As soon as I fill up, the CP3 is quiet again.