98 c2500 2wd 5.7

[goatboy0067]

picked up a 98 c2500 with broken valve spring. got it home replaced it, the plugs changed oil and it ran perfect. i went to start it two days later and it wont start. so in this order

 

scanned for codes i got a bad throttle positioning sensor code

replaced still no start

checked fuel pressure sat for 10 hrs while i was at work at 70 psi (new pump just intalled)

check crank sensor checks out

pulled all plugs and check for spark (all have apark some better thank others)

when i did this and cranked it over i thought i would get some fuel from the cylinders this did not happen.

the injection system (spider) seems to not be working correctly

it was replaced 30000 miles ago (per oener and the reciepts)

i cant see all the injectors being bad.

 

what would shut down the fuel delivery system without warning?

 

 

[goatboy0067]

also sprayed starting fluid into the throttle body and it will start but wont stay running.