TL* THE CONTACT OWNS A 2013 FORD EXPLORER. THE CONTACT HEARD AN ABNORMAL NOISE COMING FROM THE FRONT OF THE VEHICLE AND THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT STATED THAT THERE WAS SMOKE COMING THROUGH THE VENTS INTO THE VEHICLE. THE VEHICLE WAS TAKEN TO A DEALER, BUT WAS NOT DIAGNOSED. THE ECO BOOST MOTOR WAS REPLACED. AFTER THE VEHICLE WAS SERVICED, WHILE DRIVING 45 MPH, THE CONTACT HEARD A KNOCKING NOISE UNDER THE HOOD OF THE VEHICLE AND THE ENGINE STALLED WITHOUT WARNING. THE VEHICLE WAS TAKEN BACK TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE EVAP PURGE VALVE NEEDED TO BE REPLACED. THE VEHICLE WAS REPAIRED; HOWEVER, THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES. THE FAILURE MILEAGE WAS 85,491.