My blazer just turns over but as long as i spray gas in the throttle body it runs perfect what is the cause of this i put a brandnew acdelco fuel pump in, new plugs, wires,cap, distributor, crank sensor all that is new i dont know what else it could be

Hello, if spraying a fuel in the throttle body causes the vehicle to run, you are either experiencing a lack of fuel delivery to the engine under normal conditions, or have an abundance of air getting into the engine that fuel can't keep up with. This isn't a difficult diagnosis to perform for a skilled technician - if you have proper equipment and experience / skill - it can be figured out pretty easily. Diagnosing by replacing parts is a terrible idea -- as it has not been successful for you, and besides - you could be replacing perfectly good parts with ones that aren't working right or as well as the originals. If it was me, i'd start with a manual gauge fuel pressure test and go from there. Good luck. www.repairpal.com/repair-shops

Simple - replace the blown fuel pump fuse. In under hood fuse box.