TL* THE CONTACT OWNS A 1999 CHEVROLET MONTE CARLO. THE CONTACT STATED THAT AFTER TURNING THE IGNITION KEY TO START THE ENGINE, AN EXPLOSION OCCURRED UNDER THE HOOD. THE CONTACT DISCOVERED THAT DURING THE INCIDENT THE INTAKE MANIFOLD AND THE TOP OF THE ENGINE WERE SEVERELY DAMAGED. THE CAUSE OF THE FAILURE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT NOTIFIED. THE FAILURE MILEAGE WAS 148,551.