fuel problems

[jamesg1551]

have a 1994 gmc 1500, 4.3 engine. fuel supply problems. replaced pump with Delphi pump getting 2 second power to pump truck still will not start. could it be a relay problem or bad connection? please help. thanks james

[maxwedge]

Basics, got spark, do the injectors spray when first cranking, will it start spraying carb cleaner into the intake?

[jamesg1551]

thanks for helping. have fuel at inlet line on back of tb. injectors not spraying. however I do not have spark. will injectors spray if I have no spark? thinking problem with spark to be coil or pcm. again thanks for help..james

[maxwedge]

OK,power to the pump for prime, but does it run, if not check the ground side circuit to the pump.