I have a 1993 s10 blazer, 4.3 CPI v6. Problem is that sometimes, after driving for a while the engine will sputter and die. I have replaced the following
-fuel pump and sending unit
-CPI unit including the regulator
- filter
-fuel relay
-gas tank (had a leak)
- few sensors that has to do with spark

All this I did not to long ago. So here's where I'm at.

After driving for a while it will sputter and die. I check a fuel pressure at the rail and have proper pressure. So I pull a plug and have spark, but the plug was completely dry. I shot some starter fluid into the intake and its tried to fire. After sitting for a while it will start then run like crap and die. I think it's a fuel
Problem but I'm not sure what or what's left to replace! Any help is greatly Appreciated!!

 

do those have a crank position sensor?

 

whats exactly is "proper pressure"?

Nothing less then 60lb,then MUST hold above 55 for 10 min. running is around 52-54.