Judging engine failure from spark plug color analysis
Normal spark plugs <br /> Normal spark plugs are light brown.
Normal color of spark plug after burning
，俗称 。 Engine Burning Oil <br /> The spark plug has serious carbon deposits, and the oil has flowed to the commonly known as burning This kind of car exhaust pipe will emit billowing blue smoke.
故障。 Spark plug too wet <br /> The heat value of the spark plug is too low or the electrical .
There are glass-like things on the spark plug. <br /> The spark plug is stuck with sand, and the car's air filter is not sealed properly. As a result, the sand enters the combustion chamber, and the sand melts on the spark plug due to the high temperature of combustion.
There are molten aluminum balls on the spark plug. <br /> There are many small molten aluminum balls on the molten aluminum spark plug. This is because the ignition angle is advanced too much. As a result, the high temperature of the ignition is too late to emit, and the molten aluminum ball of the piston sticks to the spark plug.
。 Spark plugs are whitish <br /> The cause of the failure is that the mixture is too thin, which can cause the Failure to do so can cause serious engine failure.
Black fleece on the spark plug
损坏、电控系统故障等。 The cause of the failure is that the air filter is too dirty, the oil pressure regulator vacuum tube is broken, the gasoline pressure is too high, the damaged, and the electronic control system is faulty.
有误，点火角提前太多，混合气稀，冷却系统温度过高， 缺 等。 Spark plug ablation <br /> The cause of the fault is that the heat value of the spark plug is mismatched, the ignition angle is too much ahead, the mixture is lean, the cooling system temperature is too high, and the lubrication oil.
Spark plug center electrode shortened <br /> The cause of the failure was that the spark plug was not replaced during maintenance.
Spark plug center electrode rounded
时耗电量很大，而且还会导致工作不良。 The cause of the failure is that the spark plug has been used for too long, and such a spark plug consumes a lot of power when , and it will also cause the malfunction.
There is fog or water inside the headlights of the car. Many maintenance friends, drivers and friends have come across this, which has affected the use of the headlights. Is the headlamp not well sealed, causing water to enter the headlight, or the lampshade broken, water vapor ...
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