I have a 99 Jeep Cherokee Sport 4 liter automatic. It will not start unless you unplug the injectors. I have good spark from the plugs but all the plugs are wet. If I unplug the injectors and try and start it it will fire up for a moment and then of course die for no fuel it will run on starting fluid but as soon as I plug in any of the injectors it will not start. What would cause power to be on to the injectors all the time but cranking? Any help would be greatly appreciated.