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.
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HOMESERVICE MANUALSMAZDA1991RX-7 BASE, 2D CONVERTIBLE, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM/COMPONENT TESTSEMISSION SYSTEMS & SUB-SYSTEMSAIR PUMP
1991 Mazda RX-7 Base, 2D Convertible, Standard
Air Pump
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Air Pump
- With engine at normal operating temperature, inspect all hose connections and belt tension.
- Stop engine. Disconnect line from air pump to air control valve at the valve. Install Pressure Gauge Set (49 2113 010B) to the line. See Fig 1 . Connect tachometer to engine.
- Start engine. Operate engine at idle and note pressure reading. Reading should exceed 1.7 psi (.12 kg/cm2 ). Replace pump if not within specification.
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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.