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.
1987 Mazda B2000 Base, 2D PickupFACTORY OEM SERVICE PROCEDURE
Deceleration Spark Advance: B2600
- Bring engine to normal operating temperature. Connect tachometer and timing light. Observe timing marks. Increase engine speed gradually and check that ignition timing suddenly advances at 1300-1450 RPM.
- Connect voltmeter to Green wire (terminal "f") of distributor vacuum solenoid valve connector. See Fig 1 .
- Observe voltmeter. Slowly increase engine to above 1300 RPM. Voltmeter should read zero volts. Allow engine to slow to below 1300 RPM. Voltmeter should read 12 volts.
Factory Service Tools
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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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