Fuel Injectors

12VRattler · 11-04-2009, 12:18 AM

After changing my headgasket I seem to have some leaks on my injectors. Near as I can tell it seems it is running up out of the injector holes around the lock nut that secures the injector in place. I have new washers on the tips of the injectors and new washers on the return but am getting quite a bit of fuel pouring out on injector 1 espicially and seeping out of the rest slowly. Any ideas as to what I am missing or has anyone else had this problem?

__________________
1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed

tdshepard · 11-04-2009, 09:03 AM

Some people have problems because they didn't clean out the carbon under the copper washer.

__________________
1994 Reg cab 2 WD manual trans #0 fuel plate boost elbow BHAF 16.5* 3KGSK KDP fixed

calebmcclellan · 11-04-2009, 02:18 PM

Silver Seal Products Cummins Injector Cleaning Brush

__________________
86 C/20 w/94 12v 420k miles http://www.cumminsforum.com/forum/cu...chevy-2wd.html
92 W250 just got it

12VRattler · 11-04-2009, 08:36 PM

I guess I'll be pulling the injectors again to clean the holes out....I think that a 12 guage brush would work well but if it doesn't I will order one from the linky provided

__________________
1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed

Dual K20s · 11-04-2009, 09:22 PM

Make sure its not leaking from the return line/bolts, a lot of people have trouble getting them to reseal.

__________________
98 Dodge 2500 Motor: 12 valve, original 913 pump with the basics, some DDP parts, FASS, and more stuff then they will let me put here
Drivetrain: 5-speed 4x4 w/ SB OFE clutch (Love it!)

tdshepard · 11-04-2009, 09:24 PM

Quote:

Originally Posted by 12VRattler

I guess I'll be pulling the injectors again to clean the holes out....I think that a 12 guage brush would work well but if it doesn't I will order one from the linky provided

And a good douche with brake cleaner. In my notes I have injector nut torque at 44 ft. lb, return line torque at 80 inch lb, and 28 ft lb on the high pressure line nut........

__________________
1994 Reg cab 2 WD manual trans #0 fuel plate boost elbow BHAF 16.5* 3KGSK KDP fixed

12VRattler · 11-05-2009, 07:32 PM

I got all new washers again from cummins so I will try it again this weekend. At cummins they gave me the option of 7mm or 9mm washers under the injectors. I didnt have a clue and took the 7's because thats what the guy said they use most often, is that right? What would the 9mm's be for?

__________________
1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed

ykdave · 11-05-2009, 07:37 PM

He meant the diameter size of the injector tip. the older engines (mainly the non turbo) used a 9mm tip and the heads were really prone to cracking. Around the era of the p-pumped engines they had switched to a 7mm tip so they could leave some more meat in the head to prevent cracking.

__________________
97 Ram 2500 / 5.9ctd /NV4500/241DHD
Custom Intake Tube+ BHAF, Pump Tuning, Autometer Pyro and Boost gauges, Dual 4" stacks, 33x12.5 Mud terrains, posi-lok, One Hella sound system, tons more to come

tdshepard · 11-05-2009, 08:40 PM

B,C Series 5.9L Injector Installation Kit (6)

I had very good luck with this kit. Even with shipping it is a bargain. The horseshoe washers are good and thick.
I used the thin washers with my injectors from a 215 hp engine.

__________________
1994 Reg cab 2 WD manual trans #0 fuel plate boost elbow BHAF 16.5* 3KGSK KDP fixed

12VRattler · 11-06-2009, 11:43 PM

Well I add a little more to my knowledge bank everyday! Its amazing the difference that 2 mm can make. I already picked up my copper washers from cummins but wish I had picked up that kit, it has everything and is almost half what I paid for just 6 washers and horseshoes....

__________________
1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed

11-04-2009, 12:18 AM	#1 (permalink)
12VRattler Cummins Fanatic Join Date: May 2009 Location: Sedgwick, KS Posts: 124 Thanks: 2 Thanked 0 Times in 0 Posts 12VRattler's Truck Pics	Fuel Injectors After changing my headgasket I seem to have some leaks on my injectors. Near as I can tell it seems it is running up out of the injector holes around the lock nut that secures the injector in place. I have new washers on the tips of the injectors and new washers on the return but am getting quite a bit of fuel pouring out on injector 1 espicially and seeping out of the rest slowly. Any ideas as to what I am missing or has anyone else had this problem? __________________ 1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed

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11-04-2009, 09:03 AM	#2 (permalink)
tdshepard Cummins Fanatic Join Date: Dec 2008 Posts: 131 Thanks: 0 Thanked 9 Times in 9 Posts tdshepard's Truck Pics	Some people have problems because they didn't clean out the carbon under the copper washer. __________________ 1994 Reg cab 2 WD manual trans #0 fuel plate boost elbow BHAF 16.5* 3KGSK KDP fixed

11-04-2009, 02:18 PM	#3 (permalink)
calebmcclellan Cummins Nut Join Date: Nov 2008 Location: kc,mo Posts: 432 Thanks: 1 Thanked 31 Times in 30 Posts calebmcclellan's Truck Pics	Silver Seal Products Cummins Injector Cleaning Brush __________________ 86 C/20 w/94 12v 420k miles http://www.cumminsforum.com/forum/cu...chevy-2wd.html 92 W250 just got it

11-04-2009, 08:36 PM	#4 (permalink)
12VRattler Cummins Fanatic Join Date: May 2009 Location: Sedgwick, KS Posts: 124 Thanks: 2 Thanked 0 Times in 0 Posts 12VRattler's Truck Pics	I guess I'll be pulling the injectors again to clean the holes out....I think that a 12 guage brush would work well but if it doesn't I will order one from the linky provided __________________ 1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed

11-04-2009, 09:22 PM	#5 (permalink)
Dual K20s Tech Specialist Join Date: May 2007 Location: Ferndale CA/San Luis Obispo CA Posts: 1,444 Thanks: 0 Thanked 6 Times in 6 Posts Dual K20s's Truck Pics	Make sure its not leaking from the return line/bolts, a lot of people have trouble getting them to reseal. __________________ 98 Dodge 2500 Motor: 12 valve, original 913 pump with the basics, some DDP parts, FASS, and more stuff then they will let me put here Drivetrain: 5-speed 4x4 w/ SB OFE clutch (Love it!)

11-05-2009, 07:32 PM	#7 (permalink)
12VRattler Cummins Fanatic Join Date: May 2009 Location: Sedgwick, KS Posts: 124 Thanks: 2 Thanked 0 Times in 0 Posts 12VRattler's Truck Pics	I got all new washers again from cummins so I will try it again this weekend. At cummins they gave me the option of 7mm or 9mm washers under the injectors. I didnt have a clue and took the 7's because thats what the guy said they use most often, is that right? What would the 9mm's be for? __________________ 1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed

11-05-2009, 07:37 PM	#8 (permalink)
ykdave Diesel Head Join Date: Feb 2008 Location: Yellowknife, NT, Canada Posts: 3,853 Thanks: 0 Thanked 76 Times in 62 Posts ykdave's Truck Pics	He meant the diameter size of the injector tip. the older engines (mainly the non turbo) used a 9mm tip and the heads were really prone to cracking. Around the era of the p-pumped engines they had switched to a 7mm tip so they could leave some more meat in the head to prevent cracking. __________________ 97 Ram 2500 / 5.9ctd /NV4500/241DHD Custom Intake Tube+ BHAF, Pump Tuning, Autometer Pyro and Boost gauges, Dual 4" stacks, 33x12.5 Mud terrains, posi-lok, One Hella sound system, tons more to come

11-05-2009, 08:40 PM	#9 (permalink)
tdshepard Cummins Fanatic Join Date: Dec 2008 Posts: 131 Thanks: 0 Thanked 9 Times in 9 Posts tdshepard's Truck Pics	B,C Series 5.9L Injector Installation Kit (6) I had very good luck with this kit. Even with shipping it is a bargain. The horseshoe washers are good and thick. I used the thin washers with my injectors from a 215 hp engine. __________________ 1994 Reg cab 2 WD manual trans #0 fuel plate boost elbow BHAF 16.5* 3KGSK KDP fixed

11-06-2009, 11:43 PM	#10 (permalink)
12VRattler Cummins Fanatic Join Date: May 2009 Location: Sedgwick, KS Posts: 124 Thanks: 2 Thanked 0 Times in 0 Posts 12VRattler's Truck Pics	Well I add a little more to my knowledge bank everyday! Its amazing the difference that 2 mm can make. I already picked up my copper washers from cummins but wish I had picked up that kit, it has everything and is almost half what I paid for just 6 washers and horseshoes.... __________________ 1996 2500 12v/nv4500 4x4 335k miles and still going strong!! KDP tabbed, Amsoil 4510 BHAF, evicted silencer ring, plugged wastegate, 5 inch FBE muffled, #100 plate, Isspro boost and pyro, Mickey Thomson ATZ's 285/75R16's, B&W steel flatbed