Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1985 Mazda RX-7 GSL, AutomaticFACTORY OEM SERVICE PROCEDURE
Injector Operation
- Using a mechanic's stethoscope, listen to each injector for normal "clicking" operating noise at idle and under acceleration.
- If both injectors do not operate, ensure that there is continuity in wire between trailing coil and terminal "U" of ECU connector. If there is continuity, check main fusible link located next to left strut tower.
- If okay, turn ignition on and ensure that main relays (2) click each time key is turned on. Main relays are located behind left strut tower and are cylindrical in shape.
- If main relays do not click when key is turned on, check that battery voltage is present at main relay connector number 2 (Black/White wire). If not, repair open in circuit.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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