k1500 not starting

[Countryboy38]

so i got this 89 k1500 4wd with a 350 tbi. it would not start so i replaced the fuel pump then i was getting no spark so i replaced the cap an rotor and the ignition module. i was finally getting spark but still no fuel from the injectors. so i bought a tbi rebuild kit an rebuilt everything an still no fuel from the injectors so i tested the injectors and they were fine. so i had a extra computer laying around that i put in and it started for about 30 seconds and ran and then shut off and now i have no fuel and spark again any ideas?

 

[dyeager535]

Start at page 3 http://www.73-87chevytrucks.com/techinfo/TroubleshootingTBISystems.pdf

Follow it to the letter. Make sure all the connectors and wires are good as you do the various tests.