Guys I have a 420E IT backhoe that will crank, but won't start. If I spray a bit of starting fluid in the intake, it fires right up and runs great. It's not sucking any air, and I've replaced both filters. I even removed the injector tubes and fuel rail, she's getting fuel. Does this thing have a fuel cutoff solenoid? Or does it just shut down the injectors when it's time to turn it off? Any help would be appreciated. Thanks!