How to Replace Spark Plugs on a Sail?
3 Answers
To replace spark plugs on a Sail, follow these steps: 1. Use a 5mm hex wrench to sequentially loosen the screws on the engine cover; 2. Remove the engine cover to reveal the ignition coils; 3. Use a small wrench to loosen the ignition coil mounting screws and remove them; 4. Use a spark plug wrench to rotate the spark plugs counterclockwise for removal, then install new spark plugs and reattach the ignition coils. Taking the 2018 Sail as an example, it belongs to the compact car category with body dimensions of: length 4300mm, width 1735mm, height 1503mm, wheelbase 2500mm, fuel tank capacity 39L, trunk capacity 366L, and curb weight 1067kg.
I've changed the spark plugs on my Sail a few times. First, confirm the model year - Sails usually come with NGK or DENSO spark plugs, so make sure to buy the correct type. Preparation is crucial: operate only after the engine has cooled down, and wear gloves to prevent burns. Open the hood, locate the ignition coils or high-voltage wires, and gently disconnect the connectors. Then, insert a dedicated spark plug wrench into the hole and turn counterclockwise to remove the old spark plug. Clean any debris from the hole using a blower to ensure no oil or dust remains. When handling the new spark plug, avoid touching the electrodes, insert it vertically, and tighten it clockwise to the appropriate torque, typically around 15-20 Nm. Too loose or too tight can be dangerous, potentially causing leaks or damage. Reconnect all the wires and restart the engine to test for stable sparking. Regular replacement can improve fuel efficiency and power - I've saved a lot on repair costs using this method. After changing, the acceleration feels smoother and the noise is reduced. It's recommended to replace them every three to five years for new cars, but check the maintenance manual for specifics.
As an ordinary driver, I learned to change spark plugs to save time and avoid going to the repair shop. The steps for the Sail are actually simple: prepare tools like a spark plug wrench and new spark plugs, with the model number available in the user manual or online stores. Turn off the engine and let it cool for half an hour—safety first! Open the hood, locate the spark plugs, usually on the side of the engine. Unplug the high-voltage wire or ignition coil connector, being careful not to pull too hard and damage the connector. Use the wrench to unscrew the old spark plug counterclockwise, taking care not to drop anything into the hole. After removing it, inspect the condition of the old spark plug—if there's carbon buildup, it may indicate the engine needs checking. Then clean the hole to ensure it's free of debris. Gently place the new spark plug in and screw it in straight, tightening it just enough to feel snug—over-tightening can cause damage. Finally, reconnect the wire, start the engine, and listen for any unusual sounds. The whole process takes about half an hour, but for the first attempt, it's advisable to keep a manual handy in case of mistakes. Remember to check the dashboard warning lights after completing the task.
