Where is the car's spark plug located?
2 Answers
The car's spark plug is located under the hood. Here is an introduction to spark plugs: 1. Function of spark plugs: They introduce high-voltage electricity into the combustion chamber and cause it to jump across the electrode gap to produce a spark, thereby igniting the combustible mixture in the cylinder. 2. Composition of spark plugs: They mainly consist of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell, with the side electrode welded to the shell. 3. Standard spark plugs: The insulator skirt is slightly recessed into the shell end face, and the side electrode is outside the shell end face. This is the most widely used type. 4. Projected insulator spark plugs: The insulator skirt is longer and protrudes beyond the shell end face. They have advantages such as high heat absorption and good anti-fouling performance, and they can be directly cooled by incoming air to lower temperature, making them less likely to cause hot spots. Therefore, they have a wide thermal adaptability range.
I was curious about the location of spark plugs while driving before. Generally, they are located at the top of each cylinder in the engine, covered by the ignition coil. When you open the hood, you can see the small protruding components on the cylinder head, which are the source of ignition. This design is intended to quickly ignite the gasoline-air mixture. If your car experiences rough idling, weak acceleration, or a sudden increase in fuel consumption, it's likely due to worn or dirty spark plugs. The lifespan of spark plugs is approximately every 30,000 kilometers, and they should be checked regularly. Failing to replace them in time may damage the engine, which is not worth the risk. I've tried inspecting them myself, but it really requires professional tools and some mechanical knowledge. The location is generally similar across different vehicle types, such as sedans or SUVs, with the main difference being the number of spark plugs. Safety comes first, so beginners are better off taking their car to a repair shop for this task.
