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 MANUALSMAZDA1991626 LE, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - BASIC TESTINGIDLE SPEED & IGNITION TIMING
1991 Mazda 626 LE, Automatic
Idle Speed & Ignition Timing
1991 Mazda 626 LE, AutomaticSECTION Idle Speed & Ignition Timing
Ensure idle speed and base ignition timing are set to specification. If necessary, see ADJUSTMENTS article in the ENGINE PERFORMANCE section.
PISTON ENGINE IGNITION TIMING (1)
| Application | Man. Trans. | (2) Auto. Trans. | |||||||
|---|---|---|---|---|---|---|---|---|---|
| B2200 | |||||||||
| Carbureted | 6@825 | 6@825 | |||||||
| Fuel-Injected | 6@750 | 6@770 | |||||||
| B2600i | 5@750 | 5@770 | |||||||
| Miata | 10@850 | 8@850 | |||||||
| MPV | |||||||||
| 2.6L 4-Cyl. | 5@750 | 5@770 | |||||||
| 3.0L V6 | 11@800 | 11@800 | |||||||
| MX-6 | |||||||||
| Non-Turbo | 6@750 | 6@750 | |||||||
| Turbo | 9@750 | 9@750 | |||||||
| Navajo | (3) 10°@Idle | (3) 10°@Idle | |||||||
| Protege | |||||||||
| SOHC | 5@750 | 5@750 | |||||||
| DOHC | 10@750 | 10@750 | |||||||
| 323 | 7@750 | 7@750 | |||||||
| 626 | |||||||||
| Non-Turbo | 6@750 | 6@750 | |||||||
| Turbo | 9@750 | 9@750 | |||||||
| 929 | |||||||||
| SOHC | - | 15@650 | |||||||
| DOHC | - | 8@700 | |||||||
|
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ROTARY ENGINE (1)
| Application | Leading (Yellow) | Trailing (Red) | ||
|---|---|---|---|---|
| RX7 | 5 @ 750 | 20 @ 750 | ||
|
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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.