I've changed spark plugs several times, and each time I feel a great sense of accomplishment. The general process is: first, disconnect the negative terminal of the car battery—this is a basic safety measure to avoid electric shock. Then, prepare the tools, including new spark plugs, a spark plug socket wrench, a torque wrench, and gloves. Open the hood and locate the spark plugs—usually under the ignition coils at the top of the engine—then remove the ignition wires one by one. Use the wrench to gently unscrew the old spark plugs, taking care not to rush to avoid damaging the cylinder threads. It's best to use compressed air to blow away any dust or debris around the area to prevent it from falling into the cylinder. Before installing the new spark plugs, check the electrode gap, which is typically around 0.8 mm—a feeler gauge or even a coin can be used to measure it. Apply a thin layer of anti-seize compound to the threads to prevent rust and make future removal easier. When tightening, use the torque wrench according to the manual specifications, usually between 15-20 Nm—too tight can cause damage, and too loose can lead to leaks. Finally, reconnect the ignition wires, start the engine, and listen for smooth operation—if vibrations are reduced, the job is done. Regularly changing spark plugs—every 20,000 to 30,000 kilometers—can improve fuel efficiency and performance. Choosing the right model for your car is crucial, and buying them online is often much cheaper. Doing it yourself saves on repair costs and boosts confidence in your car's condition.
