full fuel question

mike8061 · 03-11-2010, 12:51 AM

i got my new truck and today i went to turn up the pump. turned the pin 90* the star wheel was only ten clicks from bottom and the smoke screw was already below the nut a bit. the full fuel screw was turned to the collar.

I removed the collar and reinstalled the screw. when i tried to turn it past where it had been set it came tight very quick. I checked the threads and the lock nut was not touching of course.

Has anybody run into this? Could a part be seized or do some pumps not have alot of room to adjust

92 dont know how to fill out my sig lol

diesel dawg · 03-11-2010, 01:43 AM

every pump is different
how are the threads where you removed the collar??

#2isgreen · 03-11-2010, 01:24 PM

I know exactly what you mean, I'm sure you filed out the threads fine, here's what it is: the little o ring is bottoming out and the screw can't go in any further. This happened to me. The only ways to deal with it are A) get the number off your pump and call cummins and get them to send you a new screw, and cross your fingers that its a longer one. I tried this and they sent me a larger diamiter... No use to me..
B) find a guy who can weld, and add 1/8"ish inch to the tip of the screw. Make sure to grind it round a polish it so it doesn't cause harm inside the pump. And don't forget about runaway!!

mike8061 · 03-12-2010, 01:03 AM

Any one know if a non i/c would have the longer screw? a guy around here has a parts truck but he'd want money just to take it out to compare

Ledfoot · 03-14-2010, 08:42 PM

My 92 did the same thing and I was wondering if you could just get a longer bolt with the same thread size and use a bolt instead of the stud???

philip_arellano · 03-14-2010, 11:06 PM

yeah but you would need to make sure it has a place to put a o-ring, so no fuel comes leaking out.

Ledfoot · 03-20-2010, 07:30 PM

There is an oring that can bottom out where is it at on the screw or in the pump???

grizzly_man07 · 03-20-2010, 08:53 PM

on the screw. i would say get a longer screw or weld a 1/8 inch to it

#2isgreen · 03-20-2010, 09:22 PM

dont just take it to a buddy who has a stick welder. find somebody who knows how to weld or have an extra screw on hand that you know fits your truck. too high of voltage and your not going anywhere cause the tip will melt off. also, measure it before and after, with a dial indicator so you know exactly what you've gotten yourself into. that measurement will also help you when you put it back in, so you dont go too far in and hit runaway, start near stock settings and work your way in slowly.

mike8061 · 03-21-2010, 03:59 AM

welded some amount on lol. put it in and went it half turns till i got it to run away. backed off 1/4 turn. 3200 spring is on its way.

Ledfoot · 03-22-2010, 10:19 PM

what did you use to weld it???

Richard LeBar · 03-22-2010, 11:42 PM

Has anyone ever taken it and have some silver sodder thrown on the end of the screw instead of welding it? I think that's what I might try if I can't get it to runaway when I turn my fuel screw.

03-11-2010, 12:51 AM	#1 (permalink)
mike8061 Cummins Fan Join Date: Apr 2008 Posts: 69 Thanks: 5 Thanked 5 Times in 5 Posts iTrader Score: 0 reviews mike8061's Truck Pics	full fuel question i got my new truck and today i went to turn up the pump. turned the pin 90* the star wheel was only ten clicks from bottom and the smoke screw was already below the nut a bit. the full fuel screw was turned to the collar. I removed the collar and reinstalled the screw. when i tried to turn it past where it had been set it came tight very quick. I checked the threads and the lock nut was not touching of course. Has anybody run into this? Could a part be seized or do some pumps not have alot of room to adjust 92 dont know how to fill out my sig lol

03-11-2010, 01:43 AM	#2 (permalink)
diesel dawg Cummins Nut Join Date: Mar 2008 Posts: 374 Thanks: 4 Thanked 13 Times in 12 Posts iTrader Score: 0 reviews diesel dawg's Truck Pics	every pump is different how are the threads where you removed the collar?? __________________ 90 w250 4" to 5" dual stacks ,he351cw, pump mods, 727, 1400stall tc, full 1/2 inch fuel system dual filters 100gph electric pump to the ip, full 3" crossover tube soon to come, w/m setup non ic sticks enlarged to 4x.020 or .022 64/71/14 super b special

03-11-2010, 01:24 PM	#3 (permalink)
#2isgreen Cummins Nut Join Date: Aug 2009 Location: MD Posts: 308 Thanks: 2 Thanked 9 Times in 9 Posts iTrader Score: 0 reviews #2isgreen's Truck Pics	I know exactly what you mean, I'm sure you filed out the threads fine, here's what it is: the little o ring is bottoming out and the screw can't go in any further. This happened to me. The only ways to deal with it are A) get the number off your pump and call cummins and get them to send you a new screw, and cross your fingers that its a longer one. I tried this and they sent me a larger diamiter... No use to me.. B) find a guy who can weld, and add 1/8"ish inch to the tip of the screw. Make sure to grind it round a polish it so it doesn't cause harm inside the pump. And don't forget about runaway!! __________________ 93 W250 4x4 CC LE. Denny T, Goerends converter, pyro, boost & tach gauges, cooler tubz, 366, fuel cranked, LPLP, 4" straight pipe, timing 3/16th, BHAF, DNR POT kit 06 TDI 5SP. BEST TANK 48.75 MPG RC 1+

03-14-2010, 08:42 PM	#5 (permalink)
Ledfoot Cummins Fan Join Date: May 2009 Posts: 87 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Score: 0 reviews Ledfoot's Truck Pics	My 92 did the same thing and I was wondering if you could just get a longer bolt with the same thread size and use a bolt instead of the stud??? __________________ 1992 W250 3.55 gears 5spd. pump maxed 1/8 from runaway fuel pin ground fuel pin sping MIA 16CM exh. housing on stock turbo Stock for now clutch stock but ready to EXPLODE H1C Timing maxed to head.

03-14-2010, 11:06 PM	#6 (permalink)
philip_arellano Diesel Freak Join Date: Jun 2009 Location: New Mexico Posts: 518 Thanks: 10 Thanked 13 Times in 13 Posts iTrader Score: 0 reviews philip_arellano's Truck Pics	yeah but you would need to make sure it has a place to put a o-ring, so no fuel comes leaking out. __________________ HX35/HT3B, 6X16 INJECTORS, 47RH BULLET PROOF WITH LOCK UP TC. ALL SUPPORTING MODS

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03-12-2010, 01:03 AM	#4 (permalink)
mike8061 Cummins Fan Join Date: Apr 2008 Posts: 69 Thanks: 5 Thanked 5 Times in 5 Posts iTrader Score: 0 reviews mike8061's Truck Pics	Any one know if a non i/c would have the longer screw? a guy around here has a parts truck but he'd want money just to take it out to compare

03-20-2010, 07:30 PM	#7 (permalink)
Ledfoot Cummins Fan Join Date: May 2009 Posts: 87 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Score: 0 reviews Ledfoot's Truck Pics	There is an oring that can bottom out where is it at on the screw or in the pump???

03-20-2010, 08:53 PM	#8 (permalink)
grizzly_man07 Diesel Head Join Date: Jan 2009 Posts: 2,623 Thanks: 17 Thanked 71 Times in 67 Posts iTrader Score: 0 reviews grizzly_man07's Truck Pics	on the screw. i would say get a longer screw or weld a 1/8 inch to it __________________ SOLD: 91 d250 ic 5sp 92 d250 auto ext. cab. 366 spring. afc MIA straight pipe w/ 5in tip

03-20-2010, 09:22 PM	#9 (permalink)
#2isgreen Cummins Nut Join Date: Aug 2009 Location: MD Posts: 308 Thanks: 2 Thanked 9 Times in 9 Posts iTrader Score: 0 reviews #2isgreen's Truck Pics	dont just take it to a buddy who has a stick welder. find somebody who knows how to weld or have an extra screw on hand that you know fits your truck. too high of voltage and your not going anywhere cause the tip will melt off. also, measure it before and after, with a dial indicator so you know exactly what you've gotten yourself into. that measurement will also help you when you put it back in, so you dont go too far in and hit runaway, start near stock settings and work your way in slowly. __________________ 93 W250 4x4 CC LE. Denny T, Goerends converter, pyro, boost & tach gauges, cooler tubz, 366, fuel cranked, LPLP, 4" straight pipe, timing 3/16th, BHAF, DNR POT kit 06 TDI 5SP. BEST TANK 48.75 MPG RC 1+

03-21-2010, 03:59 AM	#10 (permalink)
mike8061 Cummins Fan Join Date: Apr 2008 Posts: 69 Thanks: 5 Thanked 5 Times in 5 Posts iTrader Score: 0 reviews mike8061's Truck Pics	welded some amount on lol. put it in and went it half turns till i got it to run away. backed off 1/4 turn. 3200 spring is on its way.

03-22-2010, 10:19 PM	#11 (permalink)
Ledfoot Cummins Fan Join Date: May 2009 Posts: 87 Thanks: 0 Thanked 2 Times in 2 Posts iTrader Score: 0 reviews Ledfoot's Truck Pics	what did you use to weld it???

03-22-2010, 11:42 PM	#12 (permalink)
Richard LeBar Diesel Freak Join Date: Mar 2008 Location: Thunder Bay Ontario Posts: 705 Thanks: 0 Thanked 6 Times in 6 Posts iTrader Score: 0 reviews Richard LeBar's Truck Pics	Has anyone ever taken it and have some silver sodder thrown on the end of the screw instead of welding it? I think that's what I might try if I can't get it to runaway when I turn my fuel screw. __________________ 1991.5 W250 3.55 Auto CTD. DDP4, modified DennyT pin , 366, He351, lp plp, 4" ex./straight pipe, ASA intake/EAAU4091 filter ~ 251.4hp/562.5 tq corrected (#1 fuel & bumped timing, no lp plp) ~ Borgeson shaft, Amsoil 5W-30 synth. w/ bypass.

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