Hello! I’m having problems with my 1996 dodge intrepid 3.5 liter. when I start it, it have fumes coming from it. It’s been missing also I change my spark plugs, wires and core and its still doing the same thing also when i take off to drive..it cut off, can anyone help with this situation. Another thing 2 Cylinder not firing, will a fuel injector make it not fire.