The adjustment of spark plug gap has an important impact on the performance of the engine. However, in actual operation, many people may make some common mistakes. The following are some common misunderstandings of spark plug gap adjustment and their explanations.
1. The gap is too large or too small
Misunderstanding: Thinking that the larger the spark plug gap, the better, or the smaller the gap, the better.
Explanation:
- Too large gap: If the spark plug gap is too large, the required breakdown voltage will increase, making it difficult to start the engine, especially when driving at high speeds. Misfire phenomenon is prone to occur.
- Too small gap: If the gap is too small, the spark may become weak, resulting in poor ignition and easy to produce carbon deposits, thus affecting the performance of the engine.
2. Directly tap the electrode for adjustment
Misunderstanding: Directly tap the spark plug electrode with a hard object to adjust the gap.
Explanation: Directly tapping the electrode may cause damage to the electrode or even breakage. The correct approach is to use needle-nosed pliers or other appropriate tools to gently adjust the electrode to ensure that the gap reaches the recommended value.
3. Ignoring the type and recommended gap of the spark plug
Misconception: Ignoring the type of spark plug and the gap value recommended by the manufacturer, and adjusting it at will.
Explanation: Different types of spark plugs (such as platinum spark plugs and iridium spark plugs) have different recommended gap values. Check the recommended gap value on the vehicle's user manual or on the spark plug packaging to ensure that the adjusted gap is within the recommended range.
4. Not checking and adjusting the gap regularly
Misconception: Thinking that once the spark plug gap is adjusted, it does not need to be checked and adjusted again.
Explanation: As the vehicle is used, the spark plug gap may change. Regularly checking the spark plug gap to ensure that it is always within the recommended range can ensure the best performance and fuel efficiency of the engine.
5. Using unqualified tools
Misconception: Using unqualified or inappropriate tools for gap adjustment.
Explanation: Using unqualified tools may result in inaccurate adjustment or even damage to the spark plug. It is recommended to use professional spark plug gap gauges (feeler gauges) and needle-nosed pliers and other tools for adjustment.
6. Neglecting to clean the spark plug
Misconception: Neglecting to clean the spark plug before adjusting the gap.
Explanation: Carbon deposits and impurities on the surface of the spark plug may affect the measurement and adjustment of the gap. Before adjusting the gap, make sure the surface of the spark plug is clean to avoid impurities interfering with the measurement results.
By understanding and avoiding these common misconceptions, you can ensure the correct adjustment of the spark plug gap, thereby ensuring the best performance and fuel efficiency of the engine.
