Yes I am having an issue with my Blazer that I can't find the problem with.
It gets hot and cuts off and will not crank back. It also hesitates when u try to drive it. Here are things I have changed. The first thing is the Distributor and all that comes or is on the distributor that means the complete kit. New plugs and wires, I also got a brand new coil for it. I just put an EGR Valve on it today. I already changed (IAC) Valve Idle Air Control,throttle sensor,MAP sensor, and The Manifold Intake Tuning Valve. The Injectors( the spider kit is brand new). Brand new fuel filter and air. I just cant figure it out we tested the fuel pump with the shrader valve and also while we had the filter off we turn the key to see if it was pumping like we think it should. Seemed to be working fine. So can someone please help me figure this out... Chevy Blazer 4.3 Vortec owner Mark...

 

check your mass air flow sensor, if not that, it is possibly faulty wiring...
check for codes to see if there are any errors.
If that is not the issue, it is possible that you are just not getting fuel to the injectors.