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Replacing Spark Plugs on the Everyday Mitsubishi Lancer: Tools and Tips
Maintaining your Mitsubishi Lancer with regular spark plug replacements is essential to ensure smooth engine performance and fuel efficiency. Spark plugs play a crucial role in igniting the air-fuel mixture inside the engine cylinders, so keeping them in good condition is vital for long-term ownership.
Tools Needed for the Job
- Spark plug socket (usually 5/8-inch or 13/16-inch)
- Ratchet wrench with an extension bar
- Torque wrench to ensure correct tightness
- Gap gauge or feeler tool
- Dielectric grease (optional)
- Compressed air or a clean cloth
Before starting, consult your Mitsubishi Lancer owner’s manual for the recommended spark plug type and gap specification. Using the correct plugs ensures optimal ignition and engine performance.
Step-by-Step Replacement Tips
- Allow the engine to cool completely to avoid burns and prevent damage to the cylinder head.
- Remove the ignition coil or spark plug wire carefully from the spark plug.
- Use compressed air or a brush to clean around the spark plug area to prevent debris from entering the combustion chamber.
- Attach the spark plug socket to your ratchet and carefully unscrew the old spark plug.
- Check and adjust the gap on the new spark plug using the gap gauge.
- Apply a small amount of dielectric grease to the spark plug boot if desired, which helps with moisture resistance and easier removal later.
- Install the new spark plug by hand to avoid cross-threading, then tighten it with a torque wrench to the specification listed in your manual.
- Reconnect the ignition coil or spark plug wire securely.
Replacing spark plugs regularly, typically every 30,000 to 60,000 miles depending on your model and driving habits, can improve your Lancer’s fuel economy and reduce emissions. With the right tools and careful attention, this maintenance task is straightforward and rewarding for everyday Mitsubishi owners.