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 - BASIC TESTINGIGNITION CHECKSLEADING SIDE IGNITOR (RX7)
1991 Mazda RX-7 Base, 2D Convertible, Standard
Leading Side IGNITOR (RX7)
1991 Mazda RX-7 Base, 2D Convertible, StandardSECTION Leading Side IGNITOR (RX7)
- Disconnect the 2-prong connector at ignitor. Connect a voltmeter (in series) between disconnected Black/Yellow wire terminals of 2 connector halves. Turn ignition on and note voltage.
- Voltage should be about 12 volts. Turn ignition off. Remove voltmeter and negative battery cable. Install Ignitor Checker (49 F018 002) between 2-prong connectors. See Fig 1 .
- Disconnect Black wire from coil. Reconnect negative battery cable. Connect ohmmeter between Black wire and ground.CAUTION: Ensure negative battery cable is disconnected prior to removing Black wire from coil. DO NOT disconnect Brown wire from coil. Ensure ohmmeter leads are installed with (+) lead to ground and () lead to Black wire.
- Turn ignition on. Place ohmmeter on the X1 scale. Hold ignitor checker SW2 switch on and note ohmmeter reading. Ohmmeter needle should rise to 1/3 the distance of the scale and then return. Replace ignitor if needle operation was incorrect.
RENDER: 1.0x
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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.