98 s10 blazer big trouble no spark ??

Here it goes kind of lengthy. 98 s10 blazer 4.3.
Started to stall the night before when we were out but kept running then the next morning I stated it up and took it for a drive about 2 city block then poof dead. Towed it home and stated trouble shooting. Checked for fuel by listening for the pump and checking the feul pressure also pulled a plug after all of that seems to be fuel. Then I pulled a wire and put a plug into it and checked for spark there was barley any. So I started trouble shooting again. Checked the coil tested good this is the pnly thing I knew how to test for with resistance. Then I replace the ignition modual and the cam sensor. And still nothing now I am stuck I also pulled every knowen fuse out and checked them individually. Along with resetting the computers and trying and trying to start it. Any ideas would be a great and wonderful help right about now Thankyou for your time. David

What was your fuel pressure?

the fuel pressure hung around 60 but I dont understand with spark even alittle why is it at least not firing.

Was the plug wet with fuel when you pulled it out? If not, the injectors are not firing. Plus, you need to check for spark on all the plug wires. Just because you have spark on one doesn't mean you have spark on all. It's best to check for spark with a "spark gap" type tester, rather than with the spark plug.