Does anyone know what the little blue hose is under the hood on my 7.3. This is on the passenger side just behind the battery. It hooks to some solenoid or little pump on the inside of the fender. It runs down the side of the motor. I notice it was loose and checked it out and it was dangling there. It had melted and come apart from whatever it's supposed to hook to. Truck runs fine but would like to know what it is and if I need to fix it or not.
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