60 of the 144 complaints filed about the Mazda RX7 are about the fuel system — 42% of everything owners reported. The worst model year for it is 1987.
60
Complaints
42%
Share of all complaints
1
Crashes
28
Fires
FUEL/PROPULSION SYSTEM
PULSATION DAMPER FAILURE LEAKING FUEL ALL OVER THE HOT EXHAUST THAT THE HEAT CAUGHT MY ENGINE ON FIRE! OVERHEATED AND DAMAGED INJECTOR CONNECTERS DUE TO FIRE BURNING THEM. INJECTORS THEM SELF : BURNT. TOTAL DAMAGE : NEAR $1058.
NHTSA complaint #10512468 — an unverified report by a vehicle owner.
FUEL/PROPULSION SYSTEM
ON 11/07/2012 AT APPROXIMATELY 7:15 A.M. WHILE LEAVING WORK I NOTICED SMOKE COMING FROM BEHIND THE RADIO. I IMMEDIATELY PULLED OVER AND REALIZED THERE WAS FIRE COMING FROM THE ENGINE COMPARTMENT. I WAS ABLE TO PUT IT OUT QUICKLY BEFORE IT SPREAD. THE DAMAGE TO MY CAR WAS SOMEWHAT SUBSTANTIAL UNDER THE INTAKE MANIFOLD. I TOOK IT TO A LOCAL REPAIR SHOP AND IT WAS DIAGNOSED, AND EXPLAINED THAT IT'S A COMMON ISSUE WITH THIS PARTICULAR MODEL. I DID A LITTLE MORE RESEARCH AND FOUND THAT THE ISSUE IS THE PULSATION DAMPENER THAT IS ATTACHED TO THE FUEL RAIL MOUNTED UNDER THE INTAKE MANIFOLD CAUSING IT TO FAIL AND COM-BUST.
NHTSA complaint #10483752 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
THE FUEL PULSATION DAMPER FAILED AND GASOLINE WAS LEAKING ONTO THE TOP OF THE ENGINE.
NHTSA complaint #10404864 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
1988 MAZDA RX7 GXL PULSATION DAMPENER ON THE INJECTOR RAIL HAS STARTED SPRAYING FUEL ONTO MY ENGINE DUE TO ITS AGE.. THIS IS A WELL KNOWN ISSUE WITH THESE AND A MISTAKE BY MAZDA THAT THEY NEED TO FIX! I ALMOST LOST MY CAR TODAY HAD THE AMOUNT OF FUEL IT LET OUT ONTO THE ENGINE WERE TO OF GOTTEN DOWN TO THE EXHAUST AND IGNITED . ( CHANGED BAD FUEL FILTER ) THE NEW AMOUNT OF PRESSURE GETTING INTO THE LINE MAY OF CAUSED THIS.. BUT THE PART IS MADE OF RUBBER AND AGAIN IS KNOWN TO BREAK. THERE WAS NO FIRE BUT ADVISED TO NO LONGER DRIVE THE CAR TILL THE ISSUE IS FIXED.
NHTSA complaint #10386941 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
MAZDA RX7 DEFECT 86-91. MAZDA IS WELL AWARE OF THIS ONGOING ISSUE BUT WILL NOT ISSUE A RECALL. THE PULSATION DAMPER ON ALL MAZDA RX7'S FROM 1986-1991 IS PRONE TO FAILURE. THE DEVICE LITERALLY COMES APART ALLOWING FUEL TO LEAK OUT. EVENTUALLY ENOUGH FUEL LEAKS OUT AND ONTO THE HOT EXHAUST MANIFOLD CAUSING A VEHICLE FIRE. I HAVE NOW BEEN INVOLVED WITH TWO OF THESE INCIDENCES. THE FIRST ONE OCCURRED APPROXIMATELY FIVE YEARS AGO WHEN THE ENGINE CAUGHT FIRE ON MY 1986 RX7, LUCKILY I WAS ABLE TO PUT THE FIRE OUT BEFORE TOTAL DEVASTATION. THE RESULT OF THE FIRE WAS ABOUT $1500.00 WORTH OF REPAIRS. THE REPAIR SHOP SAID THAT THE FIRE WAS THE RESULT OF A FUEL LEAK FROM THE PULSATION DAMPER. I NOW OWN A 1988 RX7 CONVERTIBLE AND ALL OF THE SUDDEN I BEGAN TO SMELL FUEL INSIDE THE CAR REALLY STRONG, SO STRONG IN FACT THAT I THOUGHT THAT THE FUEL TANK MUST BE LEAKING. I IMMEDIATELY PARKED THE CAR AND STARTED TO GIVE IT THE ONCE OVER NEVER THINKING THAT WITH THE SMELL BEING SOO STRONG THAT IT COULD BE COMING FROM THE PULSATION DAMPER. I CHECKED THE GAS TANK AND EVERY HOSE ON IT, NOT A DROP OF FUEL, AS A LAST RESORT I FIGURED I BETTER CHECK THE PULSATION DAMPER AND SURE ENOUGH FUEL WAS POURING OUT OF IT. I THINK THAT IF MY CAR HAD NOT BEEN A CONVERTIBLE I WOULD HAVE NOT NOTICED IT UNTIL IT WAS TOO LATE AND HAD ANOTHER FIRE. NOW EVEN THOUGH THERE WAS NO FIRE IT IS STILL GOING TO COST AROUND $500.00 TO REPAIR BECAUSE THE PART IS LOCATED UNDERNEATH THE FUEL INJECTION ASSEMBLY WHICH HAS TO BE COMPLETELY REMOVED IN ORDER TO ACCESS THE PULSATION DAMPER. I BELIEVE MAZDA SHOULD BE RESPONSIBLE FOR THE REPAIR, THEY KNOW THAT THEY HAVE A POTENTIALLY DANGEROUS/DEADLY SITUATION AND WILL DO NOTHING ABOUT IT.
NHTSA complaint #10290517 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
FIRST OFF I THOUGHT YOU GUYS CARED ABOUT THE CARS WE DROVE, THEN HOW COME YOU ALLOW THIS TO GO ON WITHOUT A RECALL IT AMAZES ME HOW STUPID YOU GUYS HAVE TO BE TO LET THIS ONE JUST SLID ON BY. MY DAMPER IS LEAKING FUEL RIGHT AS I TYPE THIS TO YOU. IF I DRIVE MY CAR IT MAY CATCH FIRE AND KILL INNOCENT VICTIMS. PLEASE MAKE THIS PROBLEM A SAFETY RECALL FOR DEALERSHIPS TO FIX AT THEIR OWN EXPENSE. THIS FAILURE IS EXTREMELY COMMON ON 86-88 MAZDA RX7'S, AND MAZDA KNOWS ABOUT IT. WHY SHOULD I HAVE TO PAY FOR KEEPING MY VEHICLE SAFE IF IT IS THEIR PROBLEM. SO MANY VICTIMS, SHOULD I BE THE NEXT ONE? PLEASE MAKE THIS A MANDITORY RECALL SO I CAN MAKE MY CAR ROADWORTHY ONCE MORE. I AM AFFRAID THAT MY CAR WILL CATCH FIRE IN THE NEAR FUTURE. THE PULSATION DAMPER IS MOUNTED TO THE FUEL RAIL OF ALL RX7'S AND ALL RX7'S HAVE A RISK OF BURNING TO THE GROUND. I HAVE SEEN SO MANY CARS LIKE MINE IN THE LOCAL JUNK YARDS, BLOOD ON THE DRIVER'S SEAT, FIRE DAMAGE EVERYWHERE. MAZDA EVEN MADE AN IMPROVEMENT ON THE REPLACEMENT PIECE SO THAT IT WILL NEVER LEAK AGAIN. I NEED THAT NEW DAMPER RIGHT NOW!
NHTSA complaint #10287280 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
WHY SHOULD I DIE FOR MAZDA MESSED UP PULSATION DAMPERS THAT LEAK AND CAUSES FIRES AND KILL INNOCENT PEOPLE. RECALL THIS '!@#$% SO I CAN DRIVE THIS SOME GOD '!@#$% PIECE OF MIND.
NHTSA complaint #10287286 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
I ROUTINELY STARTED THE CAR FOR A NICE SUNDAY DRIVE AND WHILE I WAS WAITING FOR THE CAR TO WARM UP I NOTICED FUEL LEAKING ON THE GROUND. I IMMEDIATELY SHUT THE CAR OFF AND DISCOVERED THAT FUEL HAD LEAKED ALL OVER THE TOP OF THE ENGINE AND WAS RUNNING DOWN THE SIDE AND ONTO THE EXHAUST. THE FUEL LEAK WAS COMING FROM THE FUEL PULSATION DAMPER LOCATED ON THE PRIMARY FUEL INJECTOR RAIL. I CAN BUY A REPLACEMENT PART WHICH WILL FIX THE PROBLEM, HOWEVER, I HAVE HEARD MANY COMPLAINTS ABOUT THIS PART FAILING ON A REGULAR BASIS SO IN ORDER TO REDUCE THE RISK OF A FIRE DUE TO A LEAKING POSITION DAMPER IT IS A GOOD IDEA TO REPLACE IT EVERY 2 YEARS. IF THIS HADN'T HAPPENED IN MY DRIVEWAY I MIGHT BE AN UNFORTUNATE VICTIM OF A CAR FIRE.
NHTSA complaint #10278350 — an unverified report by a vehicle owner.
FUEL SYSTEM, OTHER
THE FUEL PULSATION DAMPENER ON MY 1988 RX-7 FAILED, LEAKED FUEL AND MY ENGINE ALMOST BURNED DOWN IF I HAD NOT BEEN CARRYING A FIRE EXTINGUISHER IN MY CAR.
NHTSA complaint #10275078 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
I OWN A 1987 MAZDA RX-7 TURBO II WITH 44,500MILES ON IT, THE PULSATION DAMPER ON THE FUEL RAIL STARTED LEAKING AND LEFT A SMALL PUDDLE OF FUEL ON TOP OF THE ENGINE, AND ON THE FLOOR. I HAVE READ THAT THE PULSATION DAMPER OFTEN FAILS IN THESE CARS CAUSING FIRES. I WOULD LIKE MAZDA TO RECALL THIS PART AND ISSUE ME A NEW/UPDATED/SAFE PART. I HAVE ALREADY REPLACED THE FAILED PULSATION DAMPER WITH A BANJO BOLT TO ELIMINATE ALL CHANCES OF A POSSIBLE FIRE/FUEL LEAK. BUT I THINK MAZDA USED A PULSATION DAMPER FOR A REASON, AND I WOULD LIKE TO KEEP MY RX-7 AS ORIGINAL AS POSSIBLE.
NHTSA complaint #10267409 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
I PURCHASED A 1988 MAZDA RX-7 GXL A FEW WEEKS. TWO DAYS AGO I BEGIN TO SMELL GAS IN THE CABIN. UPON INSPECTION OF THE ENGINE BAY I HAVE FOUND THE PULSATION DAMPER ON THE FUEL RAIL IS LEAKING. I'VE BEEN RESEARCHING ON THE INTERNET FOR THE REPLACEMENT PART AND HAVE HAD CONCERN ABOUT HOW I'VE FOUND MORE ARTICLES ON THE CONSISTENT FAILURE OF THIS PART AND ITS POTENTIAL TO LEAD TO FIRE. THE COST OF THIS PART IS $137 AND BECAUSE OF THE WAY MAZDA HAS MADE THE PART I'VE BEEN TOLD THAT THIS PART WILL NEED TO BE REPLACED AGAIN WITHIN THE LIFETIME OF THE VEHICLE. I DON'T THINK THIS IS FAIR TO THE CONSUMER AS THIS HAS NEVER BEEN A MAINTENANCE REQUIRED PART AND SURELY MAZDA HAS NEVER ADVERTISED THIS PART AS SUCH.
NHTSA complaint #10259868 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
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.
NHTSA complaint #10255122 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
1984 MAZDA RX7 WITH ROTARY 13B ENGINE: FUEL SYSTEM PULSATION DAMPER FAILED CAUSING SIGNIFICANT FUEL LEAK ONTO ENGINE. PULSATION DAMPER REQUIRED REPLACEMENT TO CORRECT PROBLEM. OLD PART IS AVAILABLE IF DESIRED.
NHTSA complaint #10249119 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
EVENTS: STARTED NOTICING A STRONG SMELL OF UNBURNED GASOLINE WHILE DRIVING ON HIGHWAY. PULLED OFF HIGHWAY INTO TOWN STOPPED IN TRAFFIC. SAW A BIT OF SMOKE LEAKING PAST HOOD. GOT OUT OF CAR (QUICKLY). HAD BYSTANDER CALL 911. ASKED BYSTANDER FOR FIRE EXTINGUISHER. EMPTIED CAR (QUICKLY). FIRE EXTINGUISHER APPEARED. DID NOT OPEN HOOD, SHOT EXTINGUISHER UP, FROM BELOW THE RADIATOR. FIRE OUT. FAILURE: APPEARS THAT THE FUEL PRESSURE DAMPER STARTED LEAKING. SURMISE THAT DRIVING DOWN THE HIGHWAY WIND KEPT THE FUEL COOL ENOUGH NOT TO IGNITE, BUT, IN TOWN, THE FUEL ACCUMULATED AND GOT HOT ENOUGH TO IGNITE, BURNING WIRES AND CAUSING THE ENGINE TO DIE.. CORRECTION: REPLACE FUEL PRESSURE DAMPER, REPAIR WIRE HARNESS, REPLACE FRONT GRILL, REPAINT HOOD AND FENDERS. MECHANICAL DAMAGE WAS ABOUT $3000 (WIRE HARNESS ALONE WAS ~$1000), PLUS PAINT, ~$3000. OLD FUEL PRESSURE DAMPER STILL AVAILABLE.
NHTSA complaint #10248884 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM
(1) NO LEADING EVENTS (2)PULSATION DAMPER FAILED/BROKEN: LOW COMPRESSION IN THE FRONT ROTOR; LOW POWER OVER ALL; CONSTANT SMELL OF RAW/UNBURNT FUEL; INCREASED POWER LOSS AT 3650 R.P.M. LASTING UNTIL WELL AFTER 4500 R.P.M.(SECONDARY FUEL INJECTORS FIRING); 133 MILE TO 16.9 GALLONS OF FUEL (7.86 MILES TO A GALLON); PROBLEM IDENTIFIED BEFORE FIRE BROKE OUT; ZERO DAMAGE (EXCEPT LEAKING PULSATION DAMPER) (3) REPLACED PULSATION DAMPER WITH "BANJO BOLT"; PULSATION DAMPER REMOVED FROM SYSTEM.
NHTSA complaint #10206159 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
MY PULSATION DAMPNER ON MY 1987 MAZDA RX7 IS FAILING. IT IS A VERY WEAK PART AND EASILY SUSCEPTIBLE TO FAILURE. THE PULSATION DAMPNER IN MY CAR HAS FAILED AND ALLOWED GAS TO LEAK INTO THE ENGINE BAY AND ONTO THE HOT EXHAUST, THEREBY RESULTING IN A FIRE. IT WAS CAUGHT EARLY AND NOT SERIOUS, BUT I SMELLED BURNING GAS AND LUCKILY FOUND THE PROBLEM BEFORE IT IGNITED OTHER GAS.
NHTSA complaint #10157074 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
I RECENTLY NOTICED A FUEL SMELL IN THE ENGINE COMPARTMENT OF MY 88 RX7. FOUND IT TO BE THE FUEL PULSATION DAMPENER, A COMMONLY FAILING COMPONENT IN THE FUEL SYSTEM, BEING A LITTLE PLASTIC CAP THAT HOLDS BACK THE FUEL FROM LEAKING DIRECTLY ON THE EXHAUST MANIFOLD. I KNOW OF NUMEROUS FIRES CAUSED BY THIS OFTEN RESULTING IN A FULL ENGINE VEHICLE BURN OUT. I HAVE REPLACED THE SYSTEM WITH STRAIGHT FUEL LINES WHICH, BAD FOR THE ENGINE IS THE PRICE I WILL PAY TO KEEP FROM HAVING A ENGINE FIRE. I ALSO NOW FEEL FORCED TO KEEP A FIRE EXTINGUISHER IN THE CAR IN EASY REACH AT ALL TIMES.
NHTSA complaint #10155114 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:FUEL RAIL
I RECENTLY NOTICED A FUEL SMELL IN THE ENGINE COMPARTMENT OF MY 88 RX7. FOUND IT TO BE THE FUEL PULSATION DAMPENER, A COMMONLY FAILING COMPONENT IN THE FUEL SYSTEM, BEING A LITTLE PLASTIC CAP THAT HOLDS BACK THE FUEL FROM LEAKING DIRECTLY ON THE EXHAUST MANIFOLD. I KNOW OF NUMEROUS FIRES CAUSED BY THIS OFTEN RESULTING IN A FULL ENGINE VEHICLE BURN OUT. I HAVE REPLACED THE SYSTEM WITH STRAIGHT FUEL LINES WHICH, BAD FOR THE ENGINE IS THE PRICE I WILL PAY TO KEEP FROM HAVING A ENGINE FIRE. I ALSO NOW FEEL FORCED TO KEEP A FIRE EXTINGUISHER IN THE CAR IN EASY REACH AT ALL TIMES.
NHTSA complaint #10155114 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
FUEL INJECTION PULSATION DAMPENER BEGAN LEAKING. DUE TO IT BEING LOCATED OVER THE LOWER INTAKE MANIFOLD WHICH IS RIGHT OVER THE EXHAUST MANIFOLD WHEN IT LEAKS FUEL RUNS DOWN THE LOWER INTAKE MANIFOLD AND ONTO THE EXHAUST MANIFOLD. WHEN THE CAR IS RUNNING THE EXHAUST MANIFOLD IS EXTREMELY HOT AND THIS PROBLEM LEADS TO MANY FIRES ON THE MAZDA RX7 WHICH CAN AND DO CAUSE DAMAGE THAT RUNS INTO THE THOUSANDS OF DOLLARS TO REPAIR. I SMELLED FUEL WHEN GETTING OUT OF MY CAR AND WAS ABLE TO REPLACE THE FUEL RAIL BEFORE ANY ADDITIONAL DAMAGE OCCURRED. BECAUSE THIS PROBLEM IS COMMON WITH THESE CARS MAZDA SHOULD DO SOMETHING SUCH AS REPLACE THE EXISTING DAMPENER WITH ONE THAT WILL NOT LEAK OR AT LEAST REDESIGN THE DAMPENER SO THAT IT DRAINS ANY LEAKING FUEL THROUGH A TUBE OF SOME SORT TO THE GROUND INSTEAD OF ALLOWING IT TO LEAK ON A HOT EXHAUST MANIFOLD. MANY AN RX7 HAS DIED A FIERY DEATH DUE TO THIS KNOWN PROBLEM.
NHTSA complaint #10150500 — an unverified report by a vehicle owner.
FUEL SYSTEM, GASOLINE
WAS DRIVING DOWN FREEWAY, SPARKS BEGAN TO FLY FROM BEHIND MY CAR. I PULLED OVER IMMEDIATELY AND POPPED THE HOOD. THERE WAS A FIRE FROM MY PULSATION DAMPENER. LUCKILY I HAD WATER IN MY CAR, AND WAS ABLE TO PUT OUT THE FIRE QUICKLY.
NHTSA complaint #10138389 — an unverified report by a vehicle owner.