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 MANUALSMAZDA1995626 L4-1991CC 2.0L DOHCREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTIGNITION SYSTEMIGNITION TIMINGTESTING AND INSPECTIONAUTOMATIC TRANS.
1995 Mazda 626 L4-1991cc 2.0L DOHC
Automatic Trans.
1995 Mazda 626 L4-1991cc 2.0L DOHCSECTION Automatic Trans.
PREPARATION
1. Warm up the engine to normal operating temperature.
2. Shift the selector lever to P range.
3. Turn off all electric loads.
- Headlight
- Blower
- Rear window defroster
- Power steering
4. Wait until the coolant fan is stopped.
Note: If the climate control panel is in DEFROSTER mode, the A/C compressor will be on. Do not set this mode during ignition timing and idle speed adjustment or self-diagnosis start-up.
IGNITION TIMING CHECK
1. Perform Preparation. (Refer to above)
2. Connect a tachometer to the number one spark plug wire.
3. Verify that the idle speed is within the specification.
Idle speed (Neutral): 650-750 (700 ± 50) rpm
4. If not within specification, adjust the idle speed. (See "Idle Speed" in "Fuel Delivery and Air Induction".)
5. Remove the shorting bar from the double wire SPOUT connector.
6. Verify that the idle speed is within the specification.
Idle speed (Remove the shorting bar): 500-800 rpm
7. Connect a timing light to the number one spark plug wire.
8. Verify that the timing mark (yellow) on the crankshaft pulley and the mark on the timing belt cover are aligned.
Ignition timing: BTDC 9-11° (10 ± 1°)
1. Warm up the engine to normal operating temperature.
2. Shift the selector lever to P range.
3. Turn off all electric loads.
- Headlight
- Blower
- Rear window defroster
- Power steering
4. Wait until the coolant fan is stopped.
Note: If the climate control panel is in DEFROSTER mode, the A/C compressor will be on. Do not set this mode during ignition timing and idle speed adjustment or self-diagnosis start-up.
IGNITION TIMING CHECK
1. Perform Preparation. (Refer to above)
2. Connect a tachometer to the number one spark plug wire.
3. Verify that the idle speed is within the specification.
Idle speed (Neutral): 650-750 (700 ± 50) rpm
4. If not within specification, adjust the idle speed. (See "Idle Speed" in "Fuel Delivery and Air Induction".)
5. Remove the shorting bar from the double wire SPOUT connector.
6. Verify that the idle speed is within the specification.
Idle speed (Remove the shorting bar): 500-800 rpm
7. Connect a timing light to the number one spark plug wire.
8. Verify that the timing mark (yellow) on the crankshaft pulley and the mark on the timing belt cover are aligned.
Ignition timing: BTDC 9-11° (10 ± 1°)
RENDER: 1.0x
NO RELATED
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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.