What to Do When the Spark Plug Won't Loosen or Come Off?
1 Answers
Methods for dealing with a stuck spark plug: It is recommended to spray some screw loosening agent, let it soak for a while before trying to loosen it. Tighten and loosen it repeatedly to free it up, but never apply excessive force. If it won't budge, try turning it in the opposite direction, and after a few attempts, it should come loose. Spark plugs are installed on the side or top of the engine. In earlier models, spark plugs were connected to the distributor via ignition cables. Over the past decade or so, most car engines have been updated to connect the ignition coil directly to the spark plug. Under high voltage, the air between the center electrode and the side electrode of the spark plug rapidly ionizes, forming positively charged ions and negatively charged free electrons. When the voltage between the electrodes reaches a certain level, the number of ions and electrons in the gas increases like an avalanche, causing the air to lose its insulating properties. A discharge channel forms in the gap, resulting in a "breakdown" phenomenon. At this point, the gas becomes a luminous body, known as a "spark." Along with the heat and expansion, a "crackling" sound is also produced. The temperature of this electric spark can reach 2000–3000°C, which is sufficient to ignite the air-fuel mixture in the combustion chamber of the cylinder.
