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99 sonoma will not start on 1999 GMC Sonoma

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
i have spark i changed in jectors it still wont start gasi have but does not come out the injectors help
(3) Answers
FIRST thing to check in a case like this is....how much fuel pressure does it have? Need the psi reading! Did you replace the complete fuel spider assembly?? You know that thing under the 'intake plenum' ??? ...Bet you aint got enough pressure!!!!! Will it try to start by spraying a fuel into intake?
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ck injector pulse with a noid light
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Check hall effect switch in the distributer, or wiring from the computer, injector drivers are a ground from the computer.
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