no power to injectors
91 4.3 s10 motor with a 92 4.3 s10 ecm have no power to injectors and we have already benched tested distributor components
try the oil pressure swich,it's located at just above the oil filter. engine must have at least 4-6 psi of oil pressure while starting or it will not start. you can by-pass it by just connecting the 2 wires that come to the sender. my .02$
one word did the same thing with an 88 s10 blazer ""coil"" the power comes from it
you need to run a test on it but it could be your electic spark contor module
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