
The method for replacing spark plugs in a Sail is: 1. Remove the engine cover; 2. Clean the dust and oil around the high-voltage wire terminals, then unscrew the fixing screws; 3. Remove the high-voltage wire terminals and loosen the spark plugs; 4. Insert the hose from the high-voltage wire terminal into the combustion chamber and pull out the spark plug; 5. Tighten the new spark plug into the high-voltage wire terminal and secure it with the clip. Precautions for replacing spark plugs in a Sail are: 1. Do not use excessive force or shake the spark plug insulator when removing the high-voltage wire terminals; 2. Wait for the engine to cool down before opening the engine guard plate; 3. Keep the spark plug electrodes and sealing washers clean.

Last time I replaced the spark plugs on my Sail by myself, and it went pretty smoothly. The key was preparing the tools and being careful during the operation. First, I bought new spark plugs, making sure the model matched the OEM specifications for the Sail. I gathered a wrench, spark plug socket, and gloves—safety first—then disconnected the negative battery terminal. I popped the hood and located the spark plugs, which were on the engine cylinder head. Using the wrench, I removed the wiring from the old spark plugs and then slowly unscrewed them. It’s important not to use too much force, as they can break inside. When installing the new spark plugs, I screwed them back in gently, ensuring they were properly seated but not overtightened. Finally, I reconnected the wiring, reattached the battery, and started the engine to check if it ran smoothly. The whole process took about an hour. If the spark plugs are severely worn, they can affect fuel efficiency and power, so it’s important to replace them regularly—check them every 30,000 kilometers.

I think the key to changing spark plugs for the Sail lies in the details, as I've learned from years of car experience. When buying spark plugs, check the gap; the Sail generally uses around 0.8mm. The tools are simple: a spark plug socket is essential, along with a ratchet wrench. Before starting, disconnect the negative battery terminal to avoid the risk of electric shock. When removing the old plug, twist gently to avoid damaging the threads; when installing the new one, apply some anti-seize compound. Tighten with moderate force—hand-tighten fully, then give it an extra half turn. Many people make the mistake of over-tightening, which can break the plug in the cylinder, or using the wrong model, which can cause starting issues. After finishing, start the engine to check for smooth operation. Doing it yourself saves money, but if you lack experience, it's better to go to a repair shop to avoid damaging the coil.

As a beginner changing the spark plugs on my Sail for the first time, I first looked up video tutorials online—it didn't seem too hard. I bought new spark plugs that matched, like the NGK brand. Gathered the necessary tools: spark plug socket, wrench, and gloves. Safety steps are a must—disconnect the battery first. Located the spark plug positions under the engine cover—four small round holes. Unscrewed the old plug wires and carefully removed the old spark plugs. When installing the new ones, placed them gently and tightened slowly. Reconnected the wires, restored the battery, and started the car to test. Success—the engine started quicker and smoother. Beginners should avoid rushing; mistakes can lead to engine shaking issues.

When replacing the spark plugs on a Sail, considering safety and economy, I suggest evaluating your skills before attempting it yourself. You only need to spend a few dozen yuan on a socket wrench set, and new spark plugs are also quite inexpensive. Safety is key: always disconnect the negative battery terminal. Locate the spark plugs on the engine cylinder head, and be careful not to force the removal of the wiring and old plugs. When installing new plugs, check the gap; the standard specifications for the Sail are sufficient. After completion, test start the engine—issues like engine shaking indicate improper installation. DIY can save you around a hundred yuan, but if you're unsure about your technical skills, it's better to go to a professional shop to avoid risks. Typically, spark plugs should be replaced every two to three years, as they affect fuel consumption.


