Why will my 1989 Chevrolet s10 not start?

try and boost it with another truck or car and try to start it. check to see that someone hasn't tapped into the coil if they have the fuel gage will not work, and it wont give full power to the distributor. if it is tapped cut the wire and tape both ends of the wire because it will be live and will spark and ground off of the engine.