So a known good PMD did not solve the issue
Background...
A couple years ago i did an initial look at the Sub.
I found the fuel pump wiring messed up,the PMD was mounted to the intake and the big one the Cat was plugged solid.
I fixed the issues moved the pmd and removed the Cat.The brakes were totaly gone so i did not drive it other than around my yard,and parked it.
Fast forward to last week
I put a couple battery's in it and it fires right up.
It had settled into the dirt a bit so it was like trying to drive over a 2x4 in front of each wheel.
As i gave to throttle it started to surge and it was blowing black smoke like crazy,eventually i got it rocked out of it's holes and drove it around the yard lots of black smoke and surging,got it into my shop and now am stumped.
Borrowed a PMD from SIL that is a known good one after trying an extra i had,removing the extension cable to the remote mount and hooking back to the factory cable and intake mount the running issues didn't change other than it will not start now,actually it will fire but die as soon as you release the key.If you keep the key in the crank position it will fire and die while cranking.If you keep cranking for an extended time it will try to fire again but not quite as long as the initial fire from a cranking event you just start.
Fuel pump is working
Any help will be appreciated.
Thanks Thomas
90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews