I Would appreciate some advice on were to go next if possible.
Long story short, (Kind of)
I bought a 03 Kodiak (Duramax/allison) from a State auction about a year ago, bought it site on seen with no history given.
It had dead batteries and the large ground cable that goes from the block to the frame was broken off. I replaced those items, hit the key and she fired right up, motor sounded perfectly fine, good oil pressure, no smoke, etc etc. I then decided I was going convert it to a dump truck and keep it for my business. so for the next 6 months or so I started it here and there pulling it in and out of the shop to pull the old utility bed off and install a dump body, paint the frame, etc. It then sat for another 6 months or so simply because I was to busy to finish it up and I didn't really need the truck at the time. So just recently I decided to finish this project up, It started right up, drove it in the shop, worked on it all day, fired it back up to move it outside for the night, next day it will not fire. It acted like it was not getting fuel and no matter how much I pumped the primer it never got super hard and wouldn't fire. I had a fuel pump sitting on the shelf off a 6.0, I figured what the hell, Ill throw it inline quick since being it was now a dump body the fuel line was easily accessible. Well it fired right up but ran ruff do to there being way to much rail pressure. I pulled it back in the shop and tried to track down a leak somewhere or a area it was sucking air but could not find any issues. I then changed the fuel filter, no change, I then installed a new filter head and replaced all the rubber fuel lines as some of them were dry rotted, still no start unless I used the pump. I overzealously assumed the worst and figured its a LB7 it must have a injector sticking or something injector related not allowing it to start. So Today I finished installing all new Injectors and it is doing the exact same thing, just cranks, won't pop or anything and acts like its not getting enough fuel to fire. I had another FICM sitting in the shop so I exchanged that and still nothing. So my question now is, what am I missing? I realize now I should have logged it originally and that will be my first step tomorrow when I get back to the shop with my laptop and EFI. What exactly should I log? what is the rail pressure suppose to be when its cranking over? Could the CP3 have simply died over night? Thanks in advance for taking the time to read this long winded post and I appreciate any and all advice to help me figure this thing out
:hug:
Long story short, (Kind of)
I bought a 03 Kodiak (Duramax/allison) from a State auction about a year ago, bought it site on seen with no history given.It had dead batteries and the large ground cable that goes from the block to the frame was broken off. I replaced those items, hit the key and she fired right up, motor sounded perfectly fine, good oil pressure, no smoke, etc etc. I then decided I was going convert it to a dump truck and keep it for my business. so for the next 6 months or so I started it here and there pulling it in and out of the shop to pull the old utility bed off and install a dump body, paint the frame, etc. It then sat for another 6 months or so simply because I was to busy to finish it up and I didn't really need the truck at the time. So just recently I decided to finish this project up, It started right up, drove it in the shop, worked on it all day, fired it back up to move it outside for the night, next day it will not fire. It acted like it was not getting fuel and no matter how much I pumped the primer it never got super hard and wouldn't fire. I had a fuel pump sitting on the shelf off a 6.0, I figured what the hell, Ill throw it inline quick since being it was now a dump body the fuel line was easily accessible. Well it fired right up but ran ruff do to there being way to much rail pressure. I pulled it back in the shop and tried to track down a leak somewhere or a area it was sucking air but could not find any issues. I then changed the fuel filter, no change, I then installed a new filter head and replaced all the rubber fuel lines as some of them were dry rotted, still no start unless I used the pump. I overzealously assumed the worst and figured its a LB7 it must have a injector sticking or something injector related not allowing it to start. So Today I finished installing all new Injectors and it is doing the exact same thing, just cranks, won't pop or anything and acts like its not getting enough fuel to fire. I had another FICM sitting in the shop so I exchanged that and still nothing. So my question now is, what am I missing? I realize now I should have logged it originally and that will be my first step tomorrow when I get back to the shop with my laptop and EFI. What exactly should I log? what is the rail pressure suppose to be when its cranking over? Could the CP3 have simply died over night? Thanks in advance for taking the time to read this long winded post and I appreciate any and all advice to help me figure this thing out
:hug:
