1984 Mazda Rx7 problems
The Mazda RX-7 is a front-engine, rear-wheel-drive, rotary engine-powered sports car that was manufactured and marketed by Mazda from 1978 until 2002 across three generations, all of which made use of a compact, lightweight Wankel rotary engine.
The first-generation RX-7, sometimes referred to as the SA (early) and FB (late), is a two-seater 2-door hatchback coupé. It featured a 12A carbureted rotary engine as well as the option for a 13B rotary engine with electronic fuel injection in later years.
The second-generation RX-7, sometimes referred to as the FC, was offered as a 2-seater coupé with a 2+2 option available in some markets, as well as in a convertible body style. This was powered by the 13B rotary engine, offered in naturally aspirated or turbocharged forms.
The third-generation RX-7, sometimes referred to as the FD, was offered a 2+2-seater coupé with a limited run of a 2-seater option. Some markets were only available as a 2-seater. It featured a sequentially-turbocharged 13B REW engine.
More than 800,000 RX-7s were manufactured over its lifetime.
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Common 1984 Mazda Rx7 problems
Based on the information from owners of the Mazda RX-7 1984, common problems with this car include:
- Rotary Engine Maintenance:
- The rotary engine in the Mazda RX-7 is known for burning a significant amount of oil, especially as the car accumulates mileage. This can lead to increased maintenance costs and the need for frequent oil top-ups.
- Apex seals in the rotary engine have a limited lifespan, often requiring a full engine rebuild around the 80,000-mile mark. This rebuild can be a costly and time-consuming process for owners.
- Mediocre Gas Mileage and Torque:
- The Mazda RX-7 FB is reported to have mediocre gas mileage and underwhelming torque ratings compared to its rivals like the Porsche 944. The torque output of the rotary engine is subpar, making it less powerful in terms of acceleration and performance.
- High Maintenance Costs:
- Due to the unique design of the rotary engine, maintenance and repairs can be more expensive compared to traditional piston engines. Finding skilled rotary mechanics can be challenging, and engine rebuilds may be necessary as the car ages.
- Limited Parts Availability:
- Finding specific parts for the fuel-injected models like the GSL-SE can be difficult, especially for components like the oil cooler. This can lead to delays in repairs and maintenance, impacting the overall ownership experience.
- Chassis and Suspension Issues:
- Some owners have reported weaknesses in the chassis, particularly related to the second gear synchro and power-steering pump. These issues can affect the driving experience and may require attention to ensure the car remains safe and reliable.
- Fuel Efficiency:
- The Mazda RX-7 FB is not known for exceptional fuel economy, with models like the GSL-SE returning around 18 mpg in city driving. While this may not be a significant concern for all owners, it is a factor to consider for those looking for a more fuel-efficient vehicle.
By addressing these common problems associated with the Mazda RX-7 1984, potential buyers and current owners can make informed decisions regarding maintenance, repairs, and overall ownership of this iconic sports car.
Why is the RX-7 illegal?
Any Mazda RX-7 produced after 1995 is not allowed or is banned in the United States. This is because of the left-hand driving configuration of the vehicle. This means that if you want to own one, you have a couple of options. One is to find a used RX-7 in the United States that is a 1995 year model or older.
How long do RX-7 motors last?
How long does an RX7 engine last? Proper care and maintenance over 32 years or 400,000klm.
What is the problem with the RX-7 FC?
Mazda RX-7 FC Top 5 common problems
- Broken apex seals.
- Low compression rate.
- Faulty interior electrics.
- Abused rear differential.
- Faded/peeling paintwork, or rust.
How much horsepower does a 1984 RX-7 have?
With its 1.3-liter displacement and new technology, the 13B develops 135 horsepower at 6000 rpm and 133 pound-feet of torque at 2750 rpm, both healthy increases from the 101 horsepower at 6000 rpm and 107 pound-feet at 4000 rpm of the 1.1-liter 12A engine, which is still standard in other RX-7s.
1984 Mazda Rx7 car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Mazda Rx7 problems, we found that the most common problems with these 2023 model year vehicles are:
- Electrical system problems
- Fuel system problems
- Gasoline problems
The graph below shows statistics for all 1984 Mazda Rx7 vehicle components and the number of complaints received.
1984 Mazda Rx7 complaints
The NHTSA has received 5 complaints about various vehicle components related to the 1984 Mazda Rx7.
FUEL SYSTEM, GASOLINE PROBLEM
- Date Of Incident: 2008-10-22
- VIN: JM1FB3325E0
- Components: FUEL SYSTEM, GASOLINE
- Summary: 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. *TR
FUEL SYSTEM, GASOLINE PROBLEM
- Date Of Incident: 2008-11-14
- Fire: 1
- Components: FUEL SYSTEM, GASOLINE
- Summary: 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. *TR
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2024-11-24
- Fire: 1
- Components: ELECTRICAL SYSTEM
- Summary: AFTER PARKING VEHICE SMELLED SMOKE. SOON AFTERWARDS, FLAMES STARTED. SECOND TIME, WHILE TRAVELING SMELED SMOKE INSIDE OF VEHICLE. CONSUMER PULLED VEHICLE OVER, AND NOTICED FIRE UNDER HOOD. CONSUMER PUT FIRE OUT. DEALER HAS BEEN CONTACTED. PLEASE PROVIDE FURHTER INFORMATION.*AK
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 1998-08-15
- VIN: JM1FB3328E0
- Components: ELECTRICAL SYSTEM
- Summary: NO SUMMARY LISTED FOR THIS VEHICLE. *AK
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 1995-06-23
- Number Of Injuries: 1
- Crash: 1
- Fire: 1
- VIN: JM1FB33F084
- Components: ELECTRICAL SYSTEM
- Summary: VEHICLE IMPACTED AT 6:00 POSITION AND 12:00 POSITION, VEHICLE CAUGHT ON FIRE. *AK
Additional sources
More sources of information about 1984 Mazda Rx7 problems:
Common problems that come with owning a rotary? - RX7Club.com ...
Feb 7, 2012 ... New Member RX-7 Technical - Common problems that come with owning a rotary ... RX7 as my first car (84 or 85 GSL if I can ... RX7Club.com - Mazda ...
How unreliable really is an RX7? : r/RX7
Jan 21, 2022 ... No engine core issues with 131k on the original motor. So reliability, it's fine. I still wouldn't recommend dailying and RX-7 or RX-8 if you're ...
Buying RX-7 first gen - common problems? - RX7Club.com - Mazda ...
Mar 18, 2005 ... 1st Generation Specific (1979-1985) - Buying RX-7 first gen - common problems? - I'm looking at buying a 1984 RX-7 GS for $1500 CAN this ...
What are some common problems with Mazda RX-7s (FC)? - Quora
Feb 24, 2023 ... Engine Issues: One of the most common problems with the RX-7 (FC) is engine issues. · Fuel System Issues: Fuel system issues are also common in ...
What are common problems with the 3rd gen. RX7's?? - RX7Club ...
Dec 16, 2002 ... Just a quick answer to your question, cooling system of a stock 3rd gen RX7 is crap. You need to do some mods there, depending upon what you ...
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