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.
1982 Mazda 626 L4-2000 1970ccFACTORY OEM SERVICE PROCEDURE
Spark Plug: Testing and Inspection
Fig. 6 Spark plug inspection:
Check the following points. If a problem is found replace the spark plug Fig. 6.
1. Damaged insulation.
2. Worn electrodes.
3. Carbon deposits: If cleaning is necessary, use a plug cleaner or a wire brush. Clean the upper insulator too.
4. Damaged gasket.
5. Burnt condition of the spark insulator. If it is black with carbon deposits, either misfiring due to improper proportions of gas and air or overheating of the plug may have occurred
Plug gap: 0.75-0.85 mm (0,030-0.034 in).
Factory Service Tools
Use the Manual With the Right Hardware
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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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