1986 model year · NHTSA recalls, manufacturer TSBs, and owner forum reports · Updated September 2026
1986 · All trims · All engines
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1986 Mazda RX-7 has 5 documented known issues, with 1 rated critical. The most serious is Oil Metering Pump Neglect and Brittle Injection Lines — Apex Seal Starvation ($200-$900 repair). Across all issues with published estimates, repair costs range from $50 to $1,000. DIY maintenance guides at au7o.io.
SEAT BELTS:FRONT:WEBBING
THE RAIL OF THE AUTOMATIC SHOULDER BELT CAN WEAR SUFFICIENTLY SUCH THAT THE CABLE WHICH RETRACTS THE BUCKLE ASSEMBLY WILL BECOME JAMMED IN THE RAIL RENDERING THE SHOULDER BELT INOPERATIVE.
AIR BAGS:FRONTAL
THREADED INFLATOR COMPONENTS MAY HAVE BEEN DAMAGED DURING ASSEMBLY WHICH MAY ALLOW COMPONENTS TO SEPARATE WHEN INFLATOR RECEIVES A SIGNAL TO DEPLOY THE AIR BAG.
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According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 1986 Mazda RX-7 has 5 documented issues. The most frequently reported are: Oil Metering Pump Neglect and Brittle Injection Lines — Apex Seal Starvation, DTSS Rear Toe-Control Bushing Wear — Vague, Self-Steering Rear End, Degraded Chassis and Engine Grounds — the 3,800 RPM Hesitation. Of these, 1 is rated critical and should be addressed promptly.
The 1986 Mazda RX-7 has 5 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. 1 issue is rated critical: Oil Metering Pump Neglect and Brittle Injection Lines — Apex Seal Starvation. Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
Repair costs for known Mazda RX-7 issues range from $50 to $1,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, Oil Metering Pump Neglect and Brittle Injection Lines — Apex Seal Starvation, typically costs $200-$900 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
The 13B's oil metering pump (OMP) injects small amounts of engine oil to lubricate the apex and side seals; on the FC it feeds the engine through thin plastic injection lines that become rock-hard and brittle with decades of heat, cracking or snapping when disturbed. A seized pum… Repairs typically run $200-$900. Severity: high.
The FC's Dynamic Tracking Suspension System (DTSS) uses deliberately compliant rubber bushings in the rear hub carriers so cornering loads passively steer the rear wheels (up to about one degree of toe change). After 30+ years these bushings deteriorate, and the calibrated compli… Repairs typically run $350-$1,000. Severity: medium.
Content on this page was compiled with AI assistance using NHTSA complaints, TSBs, owner reports, and public automotive data. While we strive for accuracy, this information may contain errors. Always verify repair procedures and specifications with your vehicle's service manual or a qualified mechanic.
The FC's factory ground points — especially the battery ground on the driver's shock tower, which sits exposed to wheel-well water and salt, and the ECU/engine grounds — corrode with age and starve the ECU and sensors of a clean reference. The classic result is the infamous '3,80… Repairs typically run $50-$300. Severity: medium.
Unlike later RX-7s, the FC fires its two trailing spark plugs through a dedicated pair of trailing coils and a separate igniter that selects T1 or T2 on the rising/falling edge of an ECU 'select' signal — a system distinct from the leading ignition. Age-failed trailing coils and… Repairs typically run $150-$600. Severity: medium.
All naturally aspirated FC RX-7s use Mazda's 6-port induction (6PI): two auxiliary intake ports per rotor stay closed below roughly 3,800 RPM, then rotating sleeves open them for top-end power. The vacuum/pressure-driven sleeve actuators and the sleeves themselves carbonize and s… Repairs typically run $150-$800. Severity: medium.
