99 sonoma will not start on 1999 GMC Sonoma

i have spark i changed in jectors it still wont start gasi have but does not come out the injectors help

by in Saint Johnsville, NY on April 23, 2014
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3 answers
ANSWER by , April 23, 2014
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?
ANSWER by , April 23, 2014
Check hall effect switch in the distributer, or wiring from the computer, injector drivers are a ground from the computer.
ANSWER by , April 23, 2014
ck injector pulse with a noid light