engine knock - Page 2

cummins600isbe · 03-29-2007, 03:02 AM

turns out it was the CP3, now im runnin a stage 2 from John at Floor-It. Couldnt ask for anything more from him, did an out standing job on walking me through install and removal.

__________________
2008 F-350 6.4L King Ranch 4X4,SPARTAN TUNED.
2004.5 Cummins, 2500, 4X4, Full billet, FASS, TST, SMARTY, Flux sticks, cam, Di-Procol (Boost, Boost, EGT, Trans, Rail, Fuel, EOT, ECT), AFE, 5" pipe, and more (893 on fuel )

rich2500 · 03-29-2007, 07:07 AM

cool glad you got it fixed up

__________________
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,

synister · 07-09-2007, 07:54 PM

i have a 2006 cummins, i had a injector go bad, i sent the injectors, and injector pump out to be tested and modified.

now i have stage 3 injectors a stage 1 cp3 pump and a new knock!!!

my knock sounds and acts just like the one described here. mine knocks under very light throttle/load and i hear a slight metallic rattle which i was told was common on '06 common rail engines because of the Y on the valve train. i have adjusted the valves 3 times and made them a little tighter on the the last adjustment, still no change!

the trucks runs very well, fuel economy is 17 to 18 in traffic and 21 on the highway at 80mph it is a mega cab dually at that!

the power is very good, i roll into it once it shifts into second and can hear the rear tires spin!

i have other mods, but my concern was when the injector went bad i had dump a lot of diesel in the engine oil, though i did not run it hard at this time and the knock was not there until after i but the truck back together with the moded injectors and cp3.

no hard starts, no oil loss, my conclusion was the cp3 due to the stage 1 mod?

any thoughts???

Last edited by synister : 07-09-2007 at 07:57 PM.

mthisguy · 07-13-2007, 04:22 PM

go back and read the cp3 timing thread.

__________________
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.

synister · 07-13-2007, 05:09 PM

can you send a link to that thread?

LynchMob · 07-13-2007, 08:51 PM

mine has probs with hard starts at time too... most of the time its when it has only run for 10-20 mins then shut it off to get food in the store come back out to start it and truns over for a good while then i stop and try it agian then it starts ....also have notice more of a knocking noise but truck really seems to run fine gets great fuel milage so. maybe im wrong and im not getting the clutch pedal in the exact spot and the motor sounds normal im not sure. but i hate to take it to the dealer b/c they take so long ...and half the time they arent sure of what needs fixed and have to change something 5 times

maybe im just crazy what do you guys think

Mike

__________________

LynchMob
06 Reg. Cab, Bright white,tinted ,3500 6 speed pyro/boost gauges, K&N intake tube with Amsoil filter, Edge EZ, MBRP 5 inch turbo back, rhino liner .

LynchMob · 07-13-2007, 08:53 PM

oh and it never does the hard starts in the moring its normally in the after noon when its warmer out so who knows

__________________

LynchMob
06 Reg. Cab, Bright white,tinted ,3500 6 speed pyro/boost gauges, K&N intake tube with Amsoil filter, Edge EZ, MBRP 5 inch turbo back, rhino liner .

synister · 07-13-2007, 08:55 PM

my 06 starts fine everytime. it just gets noise after warming up and the longer it runs, sounds sick but great fuel economy and if i hammer it it runs hard and the noise seems to fade out.

mthisguy · 07-14-2007, 01:11 AM

CP3 timing and results

here it is.

__________________
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.

synister · 08-26-2007, 10:38 PM

buddy, i have the same type of knock, i think it is your CP3.

i have a '06 cummins with:
stage 3 injectors
stage 1 CP3
snow stage 3
and other typical bolt ons

my truck did not start making this noise until i had the pump modified and it only does it when it is above 80 degrees or hotter, if it is cooler out then i noticed it is quite.

i do also adjusted the valves about 3 times. hope this helps you

gsxr1k2 · 08-26-2007, 11:32 PM

My 06 with 95k started to knock like a injecter but i was told it was my flywheel. Dont know if thats the problem yet but it gets torn down thursday

synister · 08-26-2007, 11:35 PM

the flywheel? hmm you have a 6 speed? this knock i have only happens when it is hot out and my truck is a automatic.

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03-29-2007, 03:02 AM	#13 (permalink)
cummins600isbe WFO diesel Join Date: Feb 2006 Location: San Antonio Posts: 144 Thanks: 0 Thanked 0 Times in 0 Posts cummins600isbe's Truck Pics	turns out it was the CP3, now im runnin a stage 2 from John at Floor-It. Couldnt ask for anything more from him, did an out standing job on walking me through install and removal. __________________ 2008 F-350 6.4L King Ranch 4X4,SPARTAN TUNED. 2004.5 Cummins, 2500, 4X4, Full billet, FASS, TST, SMARTY, Flux sticks, cam, Di-Procol (Boost, Boost, EGT, Trans, Rail, Fuel, EOT, ECT), AFE, 5" pipe, and more (893 on fuel )

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03-29-2007, 07:07 AM	#14 (permalink)
rich2500 Tech Specialist Join Date: Jan 2006 Location: Pa. Posts: 387 Thanks: 0 Thanked 0 Times in 0 Posts rich2500's Truck Pics	cool glad you got it fixed up __________________ 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,

07-09-2007, 07:54 PM	#15 (permalink)
synister Cummins Fan Join Date: Jun 2007 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts synister's Truck Pics	i have a 2006 cummins, i had a injector go bad, i sent the injectors, and injector pump out to be tested and modified. now i have stage 3 injectors a stage 1 cp3 pump and a new knock!!! my knock sounds and acts just like the one described here. mine knocks under very light throttle/load and i hear a slight metallic rattle which i was told was common on '06 common rail engines because of the Y on the valve train. i have adjusted the valves 3 times and made them a little tighter on the the last adjustment, still no change! the trucks runs very well, fuel economy is 17 to 18 in traffic and 21 on the highway at 80mph it is a mega cab dually at that! the power is very good, i roll into it once it shifts into second and can hear the rear tires spin! i have other mods, but my concern was when the injector went bad i had dump a lot of diesel in the engine oil, though i did not run it hard at this time and the knock was not there until after i but the truck back together with the moded injectors and cp3. no hard starts, no oil loss, my conclusion was the cp3 due to the stage 1 mod? any thoughts??? Last edited by synister : 07-09-2007 at 07:57 PM.

07-13-2007, 04:22 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	go back and read the cp3 timing thread. __________________ 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.

07-13-2007, 05:09 PM	#17 (permalink)
synister Cummins Fan Join Date: Jun 2007 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts synister's Truck Pics	can you send a link to that thread?

07-13-2007, 08:51 PM	#18 (permalink)
LynchMob Cummins Fanatic Join Date: Apr 2007 Location: burlington VT Posts: 115 Thanks: 0 Thanked 0 Times in 0 Posts LynchMob's Truck Pics	mine has probs with hard starts at time too... most of the time its when it has only run for 10-20 mins then shut it off to get food in the store come back out to start it and truns over for a good while then i stop and try it agian then it starts ....also have notice more of a knocking noise but truck really seems to run fine gets great fuel milage so. maybe im wrong and im not getting the clutch pedal in the exact spot and the motor sounds normal im not sure. but i hate to take it to the dealer b/c they take so long ...and half the time they arent sure of what needs fixed and have to change something 5 times maybe im just crazy what do you guys think Mike __________________ LynchMob 06 Reg. Cab, Bright white,tinted ,3500 6 speed pyro/boost gauges, K&N intake tube with Amsoil filter, Edge EZ, MBRP 5 inch turbo back, rhino liner .

07-13-2007, 08:53 PM	#19 (permalink)
LynchMob Cummins Fanatic Join Date: Apr 2007 Location: burlington VT Posts: 115 Thanks: 0 Thanked 0 Times in 0 Posts LynchMob's Truck Pics	oh and it never does the hard starts in the moring its normally in the after noon when its warmer out so who knows __________________ LynchMob 06 Reg. Cab, Bright white,tinted ,3500 6 speed pyro/boost gauges, K&N intake tube with Amsoil filter, Edge EZ, MBRP 5 inch turbo back, rhino liner .

07-13-2007, 08:55 PM	#20 (permalink)
synister Cummins Fan Join Date: Jun 2007 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts synister's Truck Pics	my 06 starts fine everytime. it just gets noise after warming up and the longer it runs, sounds sick but great fuel economy and if i hammer it it runs hard and the noise seems to fade out.

07-14-2007, 01:11 AM	#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	CP3 timing and results here it is. __________________ 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.

08-26-2007, 10:38 PM	#22 (permalink)
synister Cummins Fan Join Date: Jun 2007 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts synister's Truck Pics	buddy, i have the same type of knock, i think it is your CP3. i have a '06 cummins with: stage 3 injectors stage 1 CP3 snow stage 3 and other typical bolt ons my truck did not start making this noise until i had the pump modified and it only does it when it is above 80 degrees or hotter, if it is cooler out then i noticed it is quite. i do also adjusted the valves about 3 times. hope this helps you

08-26-2007, 11:32 PM	#23 (permalink)
gsxr1k2 Newbie Join Date: Aug 2007 Location: Casper,Wy Posts: 12 Thanks: 0 Thanked 0 Times in 0 Posts gsxr1k2's Truck Pics	My 06 with 95k started to knock like a injecter but i was told it was my flywheel. Dont know if thats the problem yet but it gets torn down thursday

08-26-2007, 11:35 PM	#24 (permalink)
synister Cummins Fan Join Date: Jun 2007 Posts: 30 Thanks: 0 Thanked 0 Times in 0 Posts synister's Truck Pics	the flywheel? hmm you have a 6 speed? this knock i have only happens when it is hot out and my truck is a automatic.