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.
1991 Mazda 323 Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Service Intervals & Specifications
REPLACEMENT INTERVALS
| Component | Miles | ||
|---|---|---|---|
| Air Filter | 30,000 | ||
| Camshaft Timing Belt | 60,000 | ||
| Coolant | 30,000 | ||
| Fuel Filter | |||
| B2200 (Carbureted) | 30,000 | ||
| All Others | 60,000 | ||
| Oil | |||
| Non-Turbo | 7500 | ||
| Turbo | 5000 | ||
| Oil Filter | |||
| Non-Turbo | |||
| RX7 | 15000 | ||
| All Others | 7500 | ||
| Turbo | 5000 | ||
| Spark Plugs | 30,000 | ||
DRIVE BELT ADJUSTMENT (NEW BELT)
| Application | (1) Deflection In. (mm) | ||||||
|---|---|---|---|---|---|---|---|
| Air Pump | |||||||
| RX7 | 23/64-7/16 (9-11) | ||||||
| Alternator | |||||||
| B2200 | 9/32-5/16 (7-8) | ||||||
| B2600i | 25/64-15/32 (10-12) | ||||||
| Miata | 5/16-23/64 (8-9) | ||||||
| MPV | |||||||
| 2.6L | 25/64-15/32 (10-12) | ||||||
| 3.0L | 23/64-25/64 (9-10) | ||||||
| MX-6 & 626 | 15/64-5/16 (6-8) | ||||||
| Navajo | (2) | ||||||
| Protege & 323 | 5/16-23/64 (8-9) | ||||||
| RX7 | 15/32-19/32 (12-15) | ||||||
| 929 | 23/64-25/64 (9-10) | ||||||
| A/C Compressor | |||||||
| B2200 | 25/64-15/32 (10-12) | ||||||
| B2600i | 5/16-25/64 (8-10) | ||||||
| Miata | 5/16-23/64 (8-9) | ||||||
| MPV | |||||||
| 2.6L | 5/16-25/64 (8-10) | ||||||
| 3.0L | 11/64-13/64 (4.5-5) | ||||||
| MX-6 & 626 | 9/32-23/64 (7-9) | ||||||
| Navajo | (2) | ||||||
| Protege & 323 | 5/16-23/64 (8-9) | ||||||
| RX7 | 15/64-5/16 (6-8) | ||||||
| 929 | 9/32-23/64 (7-9) | ||||||
| Power Steering | |||||||
| B2200 | 9/32-5/16 (7-8) | ||||||
| B2600i | 9/32 (7) | ||||||
| Miata | 5/16-23/64 (8-9) | ||||||
| MPV | 9/32 (7) | ||||||
| MX-6 & 626 | 5/16-25/64 (8-10) | ||||||
| Navajo | (2) | ||||||
| Protege & 323 | 5/16-23/64 (8-9) | ||||||
| RX7 | 7/16-33/64 (11-13) | ||||||
| 929 | 9/32-23/64 (7-9) | ||||||
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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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