starting problems

shoeman24 · 07-01-2008, 09:06 PM

i have a 1994 dodge 2500. here recently, i have been having trouble getting it to start. it will crank fine. when i am turning it over to get it to start, if i give it some fuel it will fire up but as soon as i let off the starter it dies again. its like the fuel is being cut off as soon as the starter cuts off. i know i havent given much to go on but i am not sure how exactly to describe this beyond what i said on here. if anyone has any advice on what this is and how to fix it, i would greatly appreciate it. thanks and take care

TrueValue Truck · 07-01-2008, 09:12 PM

Moved to the 1st gen section for better exposure.

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06 3500 SRW MC ,Smarty REVO,X2 Race stack, Commander,CFM, Monster Air COI,AFE Torque tube,FASS 150 HPFP LP,Muffler delete,Tipple disc Converter and VB ,ProComp 2" leveling kit,Timbren's,Reese Class V Tow Beast

Dual K20s · 07-01-2008, 09:31 PM

Is the fuel shut-off solenoid working properly? Turn the key to run, but don't start it and pull the lever up (or bumping the starter should pull it up) and make sure it holds in the up position with the key in the run position

So if you don't give it throttle it will just crank, and crank, but never fire? And when you give it a little throttle it fires right away? will it stay running if you keep giving it throttle?

Any white smoke when it runs?
Ever replaced the overflow valve or lift pump? or checked fuel pressure?

Also a quick pump of the lift pump primer bulb might help diagnose the problem. Before you try to start it push the primer bulb in a few times (3-5 times). If this helps it might be an overflow/lift pump problem

__________________
98 Dodge 2500 Motor: 12 valve, BD exhaust brake, 4" turbo back exhaust, BHAF, KDP tabbed, 4K GSK, O-ringed head, .020 over HG, Modified AFC, DDP Stage 3 injectors, DDP DVs, 17.5* timing, 16cm^2 ex. housing Drivetrain: 5-speed 4x4 w/ SB clutch (13" OFE 450Hp)

shoeman24 · 07-01-2008, 10:03 PM

it will fire but it stops cranking when it fires up. right after it fires up though, it dies again.. it shoots out white smoke when i do give it some fuel. if i keep cranking it over and giving it fuel, it may start up if im lucky

MX26 · 07-02-2008, 09:05 AM

Sounds like either your timing is out of whack, or you need a new overflow valve. Does it continue to white smoke until you get quite a bit of fuel through it, or the motor starts to warm up?

__________________
94 12V Reg Cab 2WD - NV4500
4" FBD straight, #100, 3GSK, Autometer Pyro/Boost

Last edited by MX26 : 07-02-2008 at 09:09 AM.

Joe G. · 07-02-2008, 09:08 AM

It sounds like the fuel solenoid is pulling up ok, but falling as soon as the key is let go of. Start it and leave the key on. Check the fuel solenoid to see if you can pull it up. If you can then something is wrong in the ignition on circuit or the fuel solenoid. Check fuse #9. Read this for info on how to test the fuel solenoid: Joe G's fuel system writeup

__________________
KDP tab fix info and fuel system article jgeorge1@suddenlink.net '95 2500 CC auto 4X4,3.54,Combo EGT/boost guage,PacBrake,TST #5,370 injectors,DTT TC/VB, Cummins chrome kit.

07-01-2008, 09:06 PM	#1 (permalink)
shoeman24 Newbie Join Date: Jul 2008 Posts: 2 shoeman24's Truck Pics	starting problems i have a 1994 dodge 2500. here recently, i have been having trouble getting it to start. it will crank fine. when i am turning it over to get it to start, if i give it some fuel it will fire up but as soon as i let off the starter it dies again. its like the fuel is being cut off as soon as the starter cuts off. i know i havent given much to go on but i am not sure how exactly to describe this beyond what i said on here. if anyone has any advice on what this is and how to fix it, i would greatly appreciate it. thanks and take care

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07-01-2008, 09:12 PM	#2 (permalink)
TrueValue Truck Tech Specialist/Super Moderator Join Date: Dec 2005 Location: In a van down by the River Posts: 3,305 TrueValue Truck's Truck Pics	Moved to the 1st gen section for better exposure. __________________ Caldwellfire.com 06 3500 SRW MC ,Smarty REVO,X2 Race stack, Commander,CFM, Monster Air COI,AFE Torque tube,FASS 150 HPFP LP,Muffler delete,Tipple disc Converter and VB ,ProComp 2" leveling kit,Timbren's,Reese Class V Tow Beast

07-01-2008, 09:31 PM	#3 (permalink)
Dual K20s Tech Specialist Join Date: May 2007 Location: Ferndale CA/San Luis Obispo CA Posts: 1,303 Dual K20s's Truck Pics	Is the fuel shut-off solenoid working properly? Turn the key to run, but don't start it and pull the lever up (or bumping the starter should pull it up) and make sure it holds in the up position with the key in the run position So if you don't give it throttle it will just crank, and crank, but never fire? And when you give it a little throttle it fires right away? will it stay running if you keep giving it throttle? Any white smoke when it runs? Ever replaced the overflow valve or lift pump? or checked fuel pressure? Also a quick pump of the lift pump primer bulb might help diagnose the problem. Before you try to start it push the primer bulb in a few times (3-5 times). If this helps it might be an overflow/lift pump problem __________________ 98 Dodge 2500 Motor: 12 valve, BD exhaust brake, 4" turbo back exhaust, BHAF, KDP tabbed, 4K GSK, O-ringed head, .020 over HG, Modified AFC, DDP Stage 3 injectors, DDP DVs, 17.5* timing, 16cm^2 ex. housing Drivetrain: 5-speed 4x4 w/ SB clutch (13" OFE 450Hp)

07-01-2008, 10:03 PM	#4 (permalink)
shoeman24 Newbie Join Date: Jul 2008 Posts: 2 shoeman24's Truck Pics	it will fire but it stops cranking when it fires up. right after it fires up though, it dies again.. it shoots out white smoke when i do give it some fuel. if i keep cranking it over and giving it fuel, it may start up if im lucky

07-02-2008, 09:05 AM	#5 (permalink)
MX26 Cummins Fan Join Date: Dec 2007 Posts: 85 MX26's Truck Pics	Sounds like either your timing is out of whack, or you need a new overflow valve. Does it continue to white smoke until you get quite a bit of fuel through it, or the motor starts to warm up? __________________ 94 12V Reg Cab 2WD - NV4500 4" FBD straight, #100, 3GSK, Autometer Pyro/Boost Last edited by MX26 : 07-02-2008 at 09:09 AM.

07-02-2008, 09:08 AM	#6 (permalink)
Joe G. Diesel Freak Join Date: Apr 2007 Location: Eureka, CA Posts: 809 Joe G.'s Truck Pics	It sounds like the fuel solenoid is pulling up ok, but falling as soon as the key is let go of. Start it and leave the key on. Check the fuel solenoid to see if you can pull it up. If you can then something is wrong in the ignition on circuit or the fuel solenoid. Check fuse #9. Read this for info on how to test the fuel solenoid: Joe G's fuel system writeup __________________ KDP tab fix info and fuel system article jgeorge1@suddenlink.net '95 2500 CC auto 4X4,3.54,Combo EGT/boost guage,PacBrake,TST #5,370 injectors,DTT TC/VB, Cummins chrome kit.