TL*THE CONTACT OWNS A 2001 DODGE INTREPID. WHILE AT A RED LIGHT, THE ENGINE FAILED. THE VEHICLE WAS VERY DIFFICULT TO RESTART. THE DEALER STATED THAT THERE WERE THREE FAULTY COILS AND THREE FAULTY SPARK PLUGS. THE CONTACT BELIEVES THE VALVE TRAIN IS FAULTY. THE CHECK ENGINE LIGHT WAS ILLUMINATED ON THE INSTRUMENT PANEL AND BLUISH-GRAY SMOKE APPEARED FROM THE TAIL PIPE, WHICH WAS AN INDICATION OF ENGINE FAILURE. IN ADDITION, THE FUEL CONSUMPTION INCREASED. THE CURRENT AND FAILURE MILEAGES WERE 88,600.