hey guys i have a 94 c3500 hd 6.5 turbo diesel. customer brought it in blown motor, which it was. got a replacement from the junkyard has 60k on it, the new pmd cooler and new glow plugs. got it in the truck everything hooked up correctly but no start. has fuel to the filter on top, and i even tried some silicone spray to give her a kick nothing not even a sputter. any thoughts or help you can point me in the right direction with? thanks guys i appreciate any help i can get.

chris

 

I have same issue. Currently running through all the possibilities myself. Is there fuel out the injectors? I.E. does it prime correctly? Priming is a pain as far as I am concerned. I was instructed to jump the lift pump, open up the injector lines and crank in less then 10 second intervals until fuel mist comes out of lines. ( the lack of this is apparently my issue) also make sure the glow plug relay is working putting out the right current. Mine was FUBARed the the transition and needed to be replaced. Good luck you you sir. And keep me posted on any ideas you find so I can try them too.

 

Is the CPS hooked up????????

 

CPS would not cause a no start so long as optic sensor is providing signal you need to lose both.

Glows even though this is a high CR engine have to be operating properly.

For the engine that had the engine swap did installer correctly reconnect the pass side rear head intake gnds those go to the PCM and have to be in place & clean.

 

check if your getting fuel

 

well im back where i started the junk yard motor i received had a grenaded injection pump. have a new one now and it wont start either. got fuel at the filter housing coming out have working glow plugs, haven't tried the cracking of injectors but i"m a little afraid to fearing that things are going to break due to rust. i"m gonna go check those ground wires now.

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ok found the grounds on the back of the head to be broken i fixed them it fired right up ran great for about five minutes and then died. now i have no fuel at the filter what the hell.

 

Open the top of the fuel filter housing then take a wire from the positive terminal on battery to the G terminal on the ALDL port under the dash this will tell you if the LP is working if fuel comes out it is probally the OPS if not the LP is bad

 

than you defenitly trying that right now

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so i just tried what mayhem told me to do using my power probe. didnt fire the pump, but if i go under the truck though unplugged the pump on the frame put power to it with my power probe and it fired right up. is there a fuse somewhere or something for this pump.

 

1994 6.5s will have a relay on the fire wall under that cover on passenger side try swapping it out with one of the other ones maybe the A/C

 

the connections must have been dirty to the lp. cleaned tyhose up it fired right up. ran sputered for a bit no doubt air bound i goosed it through it and thing runs like a champ now. thanks for your help mayhem. saved my *** big time.