Just changed the fuel injectors and spark plugs on my 2010 sho, believed my #4 injector was bad. But it still locks up when I try to start it. pull the #4 plug and try to start it, fuel shoots up like 8 feet in the air (not an exaggeration) but the car will start. Put the plug back in and it locks up again. Anyone have an idea on what could be wrong? Could I have bought another bad injector and just so happen to put it in the same cylinder? Or something else?