I am at a loose here, I can't get truck to start. A lil info about the truck, it is a 2007.5 2500hd ccsb, originally had the LMM in it, bought truck with no motor, tranny or t case for cheap. Ended up putting a the drivetrain (Lml engine, trans, tcase, all electrical wiring and computers and components) in it. Did dpf/def delete, EGR delete, 5" exhaust, 3" DP, efi live by ridge runner. Went to fire it up and couldn't build rail pressure, ended up finding tip broken off #1 injector and tip broke of #1 glow plug, so I pulled engine back out and tore down to take heads off to check for damage. Everything turn out good, no scratches on cylinder wall no hole in piston! Figured since I was down that far I had all injectors tested and 7 out of 8 failed, so I got new stock Bosch injectors. Figured I might as well change out cp4 while I at! So I got the cp3 conversion kit from wehrli with sports cp3! I gasket matched the exhaust manifolds/heads, and exhaust manifolds/up pipes. Also gasket matched the exhaust intake side of turbo and cleaned it up nice and smooth, and did a lil on the exhaust down pipe of turbo. Ported and polished the intake side of turbo to and put on a wicked wheel 2 wheel!
So I got it all back together and put in truck, finally got rail pressure up to where it needs to be and pressure on return line for injectors! Truck cranks over, but never seems to fire. Doesn't seem like everyone is telling injectors to fire, I noticed on the scanner the ign 1 signal of always off, and on my dads duramax it is on when you crank engine. I have went thru wiring diagrams and it seems to be getting voltage where it needs to be, the gpcm show ign 1 signal on but ecm and bcm never do?!? I been messing with this for about a week and I am at a lose! Any input would be great! Thanks guys! Josh
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So I got it all back together and put in truck, finally got rail pressure up to where it needs to be and pressure on return line for injectors! Truck cranks over, but never seems to fire. Doesn't seem like everyone is telling injectors to fire, I noticed on the scanner the ign 1 signal of always off, and on my dads duramax it is on when you crank engine. I have went thru wiring diagrams and it seems to be getting voltage where it needs to be, the gpcm show ign 1 signal on but ecm and bcm never do?!? I been messing with this for about a week and I am at a lose! Any input would be great! Thanks guys! Josh
Sent from my iPhone using Tapatalk