Where are the spark plugs located in a car?
2 Answers
The spark plugs are generally located at the top of the engine cylinders and can be clearly seen after removing the high-voltage ignition coils. Spark plug replacement procedure: Open the hood, lift the plastic cover of the engine, remove the high-voltage ignition wires, and mark the position of each cylinder to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. When removing them, check for external debris such as leaves or dust, and make sure to clean them thoroughly. Place the new spark plugs into the spark plug holes, hand-tighten them a few turns, and then use the socket to tighten them further. Reinstall the removed high-voltage ignition wires in the firing order, and then secure the cover. Spark plug replacement interval: Under normal maintenance conditions, spark plugs should be replaced every 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it is recommended to follow the owner's manual. Platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers.
Spark plugs are installed on the cylinder head of a car engine, specifically located at the top inside the ignition cylinder. Each vehicle has multiple spark plugs depending on the number of cylinders. Having driven many cars, I can see them connected to the ignition coils when opening the hood, linked via high-voltage wires. The positioning is designed to ensure effective ignition of the air-fuel mixture during the compression stroke. If spark plugs are improperly installed or misaligned, it can lead to starting difficulties or idle vibration. It's recommended to regularly check spark plug wear and not wait until the car struggles to start. While their location seems simple, care must be taken during replacement to apply the correct tightening torque to avoid gas leaks or damage to the engine's threaded parts.
