I'm at my wits end with this blazer. Intermittent light for a week for o2 sensors. Fill it up drove it across the street home then literally no start. Starts with starter fluid so I assume fuel pump. Change the fuel pump. Didn't change the harness bc the pump I replaced matched up with the current harness which according to the diagram it wouldn't. So I assumed that as the car is 24 years old someone changed it along the way. Still no start. Now not even with fluid but I have pressure on the rail. I changed the distributor cap wires and plugs. Still. No. Start. Wtf??????

 

What codes do you have?

did you perform the fuel pressure test in the sticky?

do you have spark?

do you have an odbii scanner with live data?

George

 

Could be as easy as a blown fuse...check the fuel injection ones.

 

I'd also suggest a load test on your battery. If your battery is too weak, when you crank the starter it won't keep enough voltage for the fuel pump to keep the pressure in the required window.