How to Replace Spark Plugs in a Car?

[DeMarley]

The method for replacing spark plugs in a car is as follows: 1. Wait for the engine to cool down completely, open the hood, disconnect the ignition coil plug, then use a socket to remove the ignition coil, and you will see the spark plugs; 2. Select a socket according to the size of the spark plug nut and turn it counterclockwise to loosen, then use a magnetic rod to extract the spark plug; 3. Use the magnetic rod to hold the new spark plug and place it into the hole, then follow the reverse steps above for installation. When installing the spark plugs, a specialized torque wrench should be used to tighten them. If they are not tightened enough, it may cause cylinder leakage, and if they are tightened too much, it may lead to spark plug breakage.

[MacSara]

Changing spark plugs isn't actually difficult, I can do it myself at home. Having the right tools is key - you'll need a spark plug socket wrench, a gap gauge, and a pair of heat-resistant gloves to avoid burns. After the engine has completely cooled, open the hood and locate the spark plugs, which are usually connected to an ignition coil or wire on top. Gently pull off the wire, then use the wrench to turn the old spark plug counterclockwise - don't apply too much force, as it could break. Before installing the new spark plug, check the electrode gap and adjust it to around 0.8-1.0mm using the gap gauge to ensure proper spark. Apply some anti-seize compound during installation, screw it in clockwise until snug, then give it an additional 1/4 turn with the wrench. Finally, reconnect the wire and start the engine to check if it's running smoothly. This job takes about 15 minutes, and doing it regularly can improve fuel efficiency, saving you a lot on gas money.

[LaGavin]

I was quite nervous the first time I changed spark plugs, afraid of damaging the engine. Take it step by step: the engine must cool down for at least 30 minutes, otherwise it could burn your hands or accidentally start, causing injury. Remember to disconnect the negative battery terminal first and wrap it with tape to prevent contact. For tools, just find a spark plug socket and a torque wrench, setting the torque according to the manual. Locate the spark plug holes, loosen the ignition wires, and carefully unscrew the old plugs. Make sure the new spark plugs match the model, use a gap gauge to measure, adjust to the correct range before inserting, and tighten gently until you hear a 'click,' then add a bit more force. Reconnect the wires and test the engine's response by starting it. The whole process prioritizes safety—don’t rush. If your hands shake or you’re unsure, ask a knowledgeable friend anytime to avoid wasting money on repairs.

[LaMax]

Changing spark plugs is quite simple, with a few key steps: First, prepare a specialized wrench and a gap tool. After the engine has cooled, open the cover, remove the ignition wires, and unscrew the old spark plugs. Check the electrode gap of the new spark plugs and adjust it to the standard value. Carefully install them back, tightening clockwise until secure. Reconnect the wires and start the engine to test for smooth operation.