Spark plug heating value comparison table, what are the symptoms of spark plug heating value mismatch

Everyone should be aware of the importance of the spark plug to the engine, and whether the spark plug's calorific value matches is also very important. So let me tell you what are the symptoms of spark plug heating value mismatch.

The symptoms of spark plug calorific value mismatch can be roughly divided into two situations:

1. If the calorific value is lower than the matching value, the calorific value is too low, and the heat dissipation will be lower, which may cause the engine to knock, even cause the spark plug to overheat, and eventually cause the electrode to burn out.

2. If the calorific value is higher than the matching value, the higher the calorific value, the faster the heat dissipation will be, and the lower the temperature of the spark plug will be. Carbon deposits on the ignition head will cause electricity to run and the spark plug will not jump out of the fire.

Many car owners here may ask how to know the calorific value of the spark plug of the original car. This value is actually the best calorific value obtained when the engine is tested by the OEM. In fact, it does not have a big impact if it fluctuates by one degree.

The spark plug calorific value comparison table, the calorific value includes nine numbers from 1 to 9, of which 1--3 are low calorific values, 4--6 are medium calorific values, and 7--9 are high calorific values. The higher the calorific value, the faster the heat dissipation is, the lower the temperature of the spark plug will be, and the ignition part will produce carbon, which will cause the spark plug to spark in the electric test. The low calorific value and sufficient heat dissipation will make the temperature of the spark plug high and cause deflagration. It is easy to make the spark plug part ceramic The burnt electrode dissolves, so the calorific value of the spark plug cannot be changed randomly.