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 INSPECTIONMANUAL TRANS.
1995 Mazda 626 L4-1991cc 2.0L DOHC
Manual Trans.
1995 Mazda 626 L4-1991cc 2.0L DOHCSECTION Manual Trans.
PREPARATION
1. Warm up the engine to normal operating temperature.
2. Shift the selector lever to Neutral.
3. Turn off all electric loads.
- Headlight
- Blower
- Rear window defroster
- Power steering
4. Wait until the coolant fan has stopped.
IGNITION TIMING CHECK
1. Perform Preparation. (Refer to above.)
2. Connect a tachometer to the data link connector terminal IG- as shown.
3. Verify that the idle speed is within specification.
Idle speed: 650-750 (700 ± 50) rpm
4. If not within specification, adjust the idle speed. (See "Idle Speed" in "Fuel Delivery and Air Induction".)
5. Connect the SST to the data link connector.
6. Set switch A to position 1.
7. Set the test switch to SELF TEST.
8. If the SST is not used, connect a jumper wire between the TEN terminal and GND terminal of the data link connector.
9. Verify that the idle speed is within the specification.
Idle speed (Ground the terminal TEN): 500-800 rpm
10. Connect a timing light to the engine.
11. Verify that the timing mark (yellow) on the crankshaft pulley and the mark on the timing belt cover are aligned.
Ignition timing: BTDC 11-13° (12 ± 1°)
1. Warm up the engine to normal operating temperature.
2. Shift the selector lever to Neutral.
3. Turn off all electric loads.
- Headlight
- Blower
- Rear window defroster
- Power steering
4. Wait until the coolant fan has stopped.
IGNITION TIMING CHECK
1. Perform Preparation. (Refer to above.)
2. Connect a tachometer to the data link connector terminal IG- as shown.
3. Verify that the idle speed is within specification.
Idle speed: 650-750 (700 ± 50) rpm
4. If not within specification, adjust the idle speed. (See "Idle Speed" in "Fuel Delivery and Air Induction".)
5. Connect the SST to the data link connector.
6. Set switch A to position 1.
7. Set the test switch to SELF TEST.
8. If the SST is not used, connect a jumper wire between the TEN terminal and GND terminal of the data link connector.
9. Verify that the idle speed is within the specification.
Idle speed (Ground the terminal TEN): 500-800 rpm
10. Connect a timing light to the engine.
11. Verify that the timing mark (yellow) on the crankshaft pulley and the mark on the timing belt cover are aligned.
Ignition timing: BTDC 11-13° (12 ± 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.