I OWN AN 87 RX-7 N/A. THERE WERE NO EVENTS LEADING TO THE FAILURE I FILLED UP AT THE GAS STATION AND DROVE OFF AFTER ABOUT AN HOUR AND A HALF I SMELLED FUEL. SO I PULLED OVER TO INSPECT I SHUT OFF THE MOTOR AND THE SMELL CAME FROM UNDER THE HOOD. I QUICKLY OPENED THE HOOD AND TO MY SURPRISE THERE WAS A SMALL FLAME. LUCKILY I WAS ABLE TO PUT IT OUT USING MY SHIRT. THE CULPRIT WAS THE FUEL PULSATION DAMPER THE SCREW HAD FALLEN OUT OF THE END OF IT AND INTO THE CAP LETTING THE ENGINE COOL I THEN PUT THE SCREW BACK INTO PLACE AND CONTINUED DRIVING. ONLY FOR THE SAME THING TO HAPPEN AGAIN MINUS THE FIRE. I SCREWED IT BACK IN AND TIGHTENED IT THE BEST I COULD AND IT HAPPENED AGAIN. AT THIS POINT I WAS HOME SO I LOOKED AROUND THE GARAGE AND FOUND A FUEL RAIL FROM A 91 HONDA CIVIC AND I TOOK THE FUEL DAMPER OFF AND REMOVED THE SCREW CLEANED IT AND REPLACED THE O-RING ON IT. I THEN REPLACED THE ONE ON MY MAZDA WITH THE HONDA ONE ITS HELD FOR GOING ON 6 MONTHS NOW. NO MORE LEAKS. *TR