confused

Well we have a 1995 Ford Ranger 2.3L and the problem is that when we try to start it the engine turns over but does not start but when it is push started or plugged in it will start no problem, we have changed the temperature sensor and thermostate housing and yet still nothing...grrr. If anyone has any suggestions that would be greatly appreciated!

Cronicus

with the car off, disconect the wires of the back of the temp sensor on the head, get in and floor it, let it turn for a while, when u hear the first lil sign of a explosion start pumping if it starts its either gas or air problems, along with sensors or realys that deal with either
if not get a fat boy fuel filter on there i mean monsterous see how it starts, other then that low voltage maybe? u still on the stock battery?