What Are the Reasons for Not Being Able to Remove a Car Spark Plug?
1 Answers
Spark plugs may not come off if the wrong tools are used or if the force is applied incorrectly. If the spark plug cannot be removed, using an extended wrench usually solves the problem. Applying more force might break the ceramic part, in which case professional help from a repair shop is needed. Turn according to the torque; if it doesn't move, back off and check if the threads are misaligned to avoid breaking the spark plug or damaging the cylinder head by applying excessive force. What are spark plugs made of: Spark plugs mainly consist of a terminal nut, insulator, terminal stud, center electrode, side electrode, and shell. How spark plugs work 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 and forming a discharge channel, resulting in a 'breakdown' phenomenon. At this point, the gas becomes a luminous body, known as a 'spark.' Along with thermal expansion, a 'crackling' sound is also produced. The temperature of this electric spark can reach 2000-3000°C, sufficient to ignite the air-fuel mixture in the combustion chamber of the cylinder.
