scorched piston? stuck valve or other problem. please help!

***dixielandcummins24*** · 08-07-2008, 12:05 AM

alright well i have a 97 12v 5sp w/ laser cut delivery valves custom fuel plate 4000rpm spring kit 35/40 hybrid 16cm exhaust housing 110hp injectors, fire ringed thicker head gasket and 12mm studs. and no fuel shutoff solenoid right now because the one from pure diesel power broke. o and 16.5* timing. so heres the problem, the truck sounds like it misses or some such nonsense at idle. it doesnt lope or lose rpms just some miss in the idle sound. extremely hard to start. blows white smoke at idle, it blew blue when the head gasket was brand new and it was first decompressed. no there is no antifreeze or oil on the block and no there is no water or oil in the oil or radiator. i already blew one head, i know the symptoms. and no smoke from the blow by. it made more boost then ever the other night in 5th gear, almost 60 pds. usually i make between 48-55 because the exhaust housing relieves so much back pressure. any insight would be great, and all pushrods are seemingly straight. hard to say if they are perfect but close enough for the human eye. any ideas would be greatly appreciated.

__________________
97 p-pumped 24 valve. everything else is a secret.

dieselpower7.3 · 08-07-2008, 12:45 AM

heres a bump

__________________
06 qc 4x4 6 speed juice with att. hot unlock, sbc dual disk. aem intake.
441hp 920tq

antwan718 · 08-07-2008, 12:54 AM

To test push rods my dad would role them on a flat surface, if they encountered any problem while rolling, it was time for a new rod. Did you go and check out the valves, see if any of them show any signs of fatigue and are set to the correct gap?

__________________
-03' 5.9L w/Edge Mileage Max, 4" TBE, GHD, Modular Intake, Boost elbow
-85" Mustang GT CFI
-70" 440+6 Challenger R/T

***dixielandcummins24*** · 08-08-2008, 01:48 AM

yeah the rods are good the valves are adjusted right. someone said injectors so im going to go to zimmeys in pa and hope they have some 370 marines or 435 rv injectors and then hopefully its just a ed up injector. o and the truck does have 60lb valve springs. if its not an injector im buying a tdi... or a commonrail block and head with the factory girdle, then break something good.

__________________
97 p-pumped 24 valve. everything else is a secret.

***dixielandcummins24*** · 08-08-2008, 11:10 PM

alright a brand new set of injectors didnt clear it up. cmon fellas i need some insight really bad. i really dont want to pull the head off my truck.

__________________
97 p-pumped 24 valve. everything else is a secret.

rol'n_coal 12v · 08-09-2008, 05:44 AM

did the timing happen to slip some? seen this more than once

__________________
'96 p-pumped 24v,too much done...engine build underway

02 psd stock 400.5hp 798tq

***dixielandcummins24*** · 08-10-2008, 11:04 PM

no but ill tell you what did happen. the fire rings between #1 and #2 cylinders broke and the rings between #5 and #6 cylinders broke so a low rpms the cylinders didnt have enough compression to burn the fuel, it just pushed it into the next cylinder and that caused the chatter. aint that insane? o well its going back together twice as good as it came apart. but id love some insight in the broken fire rings.

__________________
97 p-pumped 24 valve. everything else is a secret.

antwan718 · 08-10-2008, 11:30 PM

Did you already put the new injectors in because it sounds like your having problems with fuel delivery/air ratio. Try to raise your idle a bit and see if that clears up your problem or just amplifies it as a quick fix. Just for kicks on your next tank try to run some 2stroke oil in the thing. On another note are the piston rings sealing properly? The white smoke is probably oil, and the piston rings may be leaking?

I'm just trying to throw some suggestions out there for ya.

__________________
-03' 5.9L w/Edge Mileage Max, 4" TBE, GHD, Modular Intake, Boost elbow
-85" Mustang GT CFI
-70" 440+6 Challenger R/T

rol'n_coal 12v · 08-11-2008, 10:37 PM

wow broken fire rings maybe time for a bigger turbo or something to relieve some more of the drive pressure 60 lbs out of a 35/40 seems way high i popped a gasket at 45 with a hybrid turbo just some guess's as i have not yet fire ringed my head and not sure of the pressures that they will hold. but they are just metal and at high pressures something would have to give. maybe the rings were the weak link. hope this helps a little
kortney

__________________
'96 p-pumped 24v,too much done...engine build underway

02 psd stock 400.5hp 798tq

***dixielandcummins24*** · 08-11-2008, 11:12 PM

well these were baby fire rings only rated for 80 psi. but apparently fire rings arent good on street driven trucks because they heat up and cool down so much. so the machine shop i work at is going to make some new ones for me out of some top secret metal. cant let my secrets get out. that should hold up to the heating and cooling of daily driving. did you do all the work yourself roln coal 12v?

__________________
97 p-pumped 24 valve. everything else is a secret.

***dixielandcummins24*** · 08-11-2008, 11:14 PM

hey antwan 718 none of that has anything to do w/ fuel air. and sure doesnt have to do w/ 2 stroke oil. maybe you better stick to mustangs. what i described could have only been cause buy a broken vlve if it wasnt the fire rings.

__________________
97 p-pumped 24 valve. everything else is a secret.

rol'n_coal 12v · 08-13-2008, 06:02 PM

yeah i have done all the work on my truck myself. that is the only way i can afford to play with both of them. good luck with this mystery metal on the fire rings i hope it works out. i just heard that about fire rings and daily drivers the other day but it is said if you ring the block and head they will handle it. i am gonna do both if my cometic lets go.

__________________
'96 p-pumped 24v,too much done...engine build underway

02 psd stock 400.5hp 798tq

08-07-2008, 12:05 AM	#1 (permalink)
*dixielandcummins24* Diesel Freak Join Date: Mar 2007 Location: maryland Posts: 111 dixielandcummins24's Truck Pics	scorched piston? stuck valve or other problem. please help! alright well i have a 97 12v 5sp w/ laser cut delivery valves custom fuel plate 4000rpm spring kit 35/40 hybrid 16cm exhaust housing 110hp injectors, fire ringed thicker head gasket and 12mm studs. and no fuel shutoff solenoid right now because the one from pure diesel power broke. o and 16.5* timing. so heres the problem, the truck sounds like it misses or some such nonsense at idle. it doesnt lope or lose rpms just some miss in the idle sound. extremely hard to start. blows white smoke at idle, it blew blue when the head gasket was brand new and it was first decompressed. no there is no antifreeze or oil on the block and no there is no water or oil in the oil or radiator. i already blew one head, i know the symptoms. and no smoke from the blow by. it made more boost then ever the other night in 5th gear, almost 60 pds. usually i make between 48-55 because the exhaust housing relieves so much back pressure. any insight would be great, and all pushrods are seemingly straight. hard to say if they are perfect but close enough for the human eye. any ideas would be greatly appreciated. __________________ 97 p-pumped 24 valve. everything else is a secret.

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08-07-2008, 12:45 AM	#2 (permalink)
dieselpower7.3 Cummins Nut Join Date: Feb 2007 Posts: 380 dieselpower7.3's Truck Pics	heres a bump __________________ 06 qc 4x4 6 speed juice with att. hot unlock, sbc dual disk. aem intake. 441hp 920tq

08-07-2008, 12:54 AM	#3 (permalink)
antwan718 Diesel Freak Join Date: Jan 2008 Location: Broward, FL Posts: 532 antwan718's Truck Pics	To test push rods my dad would role them on a flat surface, if they encountered any problem while rolling, it was time for a new rod. Did you go and check out the valves, see if any of them show any signs of fatigue and are set to the correct gap? __________________ -03' 5.9L w/Edge Mileage Max, 4" TBE, GHD, Modular Intake, Boost elbow -85" Mustang GT CFI -70" 440+6 Challenger R/T

08-08-2008, 01:48 AM	#4 (permalink)
*dixielandcummins24* Diesel Freak Join Date: Mar 2007 Location: maryland Posts: 111 dixielandcummins24's Truck Pics	yeah the rods are good the valves are adjusted right. someone said injectors so im going to go to zimmeys in pa and hope they have some 370 marines or 435 rv injectors and then hopefully its just a ed up injector. o and the truck does have 60lb valve springs. if its not an injector im buying a tdi... or a commonrail block and head with the factory girdle, then break something good. __________________ 97 p-pumped 24 valve. everything else is a secret.

08-08-2008, 11:10 PM	#5 (permalink)
*dixielandcummins24* Diesel Freak Join Date: Mar 2007 Location: maryland Posts: 111 dixielandcummins24's Truck Pics	alright a brand new set of injectors didnt clear it up. cmon fellas i need some insight really bad. i really dont want to pull the head off my truck. __________________ 97 p-pumped 24 valve. everything else is a secret.

08-09-2008, 05:44 AM	#6 (permalink)
rol'n_coal 12v Cummins Fanatic Join Date: Dec 2007 Location: ut Posts: 115 rol'n_coal 12v's Truck Pics	did the timing happen to slip some? seen this more than once __________________ '96 p-pumped 24v,too much done...engine build underway 02 psd stock 400.5hp 798tq

08-10-2008, 11:04 PM	#7 (permalink)
*dixielandcummins24* Diesel Freak Join Date: Mar 2007 Location: maryland Posts: 111 dixielandcummins24's Truck Pics	no but ill tell you what did happen. the fire rings between #1 and #2 cylinders broke and the rings between #5 and #6 cylinders broke so a low rpms the cylinders didnt have enough compression to burn the fuel, it just pushed it into the next cylinder and that caused the chatter. aint that insane? o well its going back together twice as good as it came apart. but id love some insight in the broken fire rings. __________________ 97 p-pumped 24 valve. everything else is a secret.

08-10-2008, 11:30 PM	#8 (permalink)
antwan718 Diesel Freak Join Date: Jan 2008 Location: Broward, FL Posts: 532 antwan718's Truck Pics	Did you already put the new injectors in because it sounds like your having problems with fuel delivery/air ratio. Try to raise your idle a bit and see if that clears up your problem or just amplifies it as a quick fix. Just for kicks on your next tank try to run some 2stroke oil in the thing. On another note are the piston rings sealing properly? The white smoke is probably oil, and the piston rings may be leaking? I'm just trying to throw some suggestions out there for ya. __________________ -03' 5.9L w/Edge Mileage Max, 4" TBE, GHD, Modular Intake, Boost elbow -85" Mustang GT CFI -70" 440+6 Challenger R/T

08-11-2008, 10:37 PM	#9 (permalink)
rol'n_coal 12v Cummins Fanatic Join Date: Dec 2007 Location: ut Posts: 115 rol'n_coal 12v's Truck Pics	wow broken fire rings maybe time for a bigger turbo or something to relieve some more of the drive pressure 60 lbs out of a 35/40 seems way high i popped a gasket at 45 with a hybrid turbo just some guess's as i have not yet fire ringed my head and not sure of the pressures that they will hold. but they are just metal and at high pressures something would have to give. maybe the rings were the weak link. hope this helps a little kortney __________________ '96 p-pumped 24v,too much done...engine build underway 02 psd stock 400.5hp 798tq

08-11-2008, 11:12 PM	#10 (permalink)
*dixielandcummins24* Diesel Freak Join Date: Mar 2007 Location: maryland Posts: 111 dixielandcummins24's Truck Pics	well these were baby fire rings only rated for 80 psi. but apparently fire rings arent good on street driven trucks because they heat up and cool down so much. so the machine shop i work at is going to make some new ones for me out of some top secret metal. cant let my secrets get out. that should hold up to the heating and cooling of daily driving. did you do all the work yourself roln coal 12v? __________________ 97 p-pumped 24 valve. everything else is a secret.

08-11-2008, 11:14 PM	#11 (permalink)
*dixielandcummins24* Diesel Freak Join Date: Mar 2007 Location: maryland Posts: 111 dixielandcummins24's Truck Pics	hey antwan 718 none of that has anything to do w/ fuel air. and sure doesnt have to do w/ 2 stroke oil. maybe you better stick to mustangs. what i described could have only been cause buy a broken vlve if it wasnt the fire rings. __________________ 97 p-pumped 24 valve. everything else is a secret.

08-13-2008, 06:02 PM	#12 (permalink)
rol'n_coal 12v Cummins Fanatic Join Date: Dec 2007 Location: ut Posts: 115 rol'n_coal 12v's Truck Pics	yeah i have done all the work on my truck myself. that is the only way i can afford to play with both of them. good luck with this mystery metal on the fire rings i hope it works out. i just heard that about fire rings and daily drivers the other day but it is said if you ring the block and head they will handle it. i am gonna do both if my cometic lets go. __________________ '96 p-pumped 24v,too much done...engine build underway 02 psd stock 400.5hp 798tq