Spark plug ablation
When the owners found Baotou beiben heavy truck accessories spark plug top has scars or damaged, electrode melting, ablation phenomena, that spark plugs have been destroyed, this time you should replace the spark plug. In the replacement process, the owner can check the spark plug ablation of the disease as well as changes in color.
Symptom 1: electrode melting and insulator white
Diagnosis: this phenomenon indicates that the combustion chamber temperature is too high. This may be a combustion chamber deposits too much, resulting in valve clearance is too small, causing further exhaust or cooling device overheating caused by poor work. When the spark plug is not tightened according to the prescribed torque, the electrode will melt and the insulator will be white.
Symptom 2: the electrode becomes round and has a scar
Diagnosis: This indicates that the engine is premature, may be the ignition time is too early or the gasoline octane number is too low, spark plug high calorific value caused by the.
Symptoms 3: the top of the insulator fragmentation
Diagnosis: Generally speaking, knock combustion is the main cause of insulator rupture. However, the ignition time is too early, the octane number is low, and the combustion chamber temperature is too high.
Symptoms 4: top black stripes
Diagnosis: the appearance of this stripe indicates that the spark plug has been leaking, the owner needs to replace the new piece unconditionally.
Spark plug on the sediment
Baotou beiben heavy truck parts and the top electrode spark plug insulator sometimes sticky deposits. Owners do not underestimate this sediment.
When serious this situation may cause the Baotou beiben heavy truck engine parts can not work normally. After cleaning the spark plug, the vehicle can run normally for the time being, but it will happen soon. In fact, the formation of the spark plug is only a surface phenomenon, which may be a problem with other parts of the vehicle mechanical signal.
Symptoms 1: spark plug with oily deposits
Diagnosis: when the spark plug oil deposits appear, it means that the oil has entered the combustion chamber. If there is only an individual spark plug with oily deposits, it may be caused by damage to the valve rod oil seal. But if each cylinder spark plug is stuck with the sediment, indicates that the cylinder oil jump. In general, blocking the air filter and ventilation device, appear extremely easily up the cylinder oil phenomenon.
Symptom 2: black deposits on spark plug
Diagnosis: spark plug electrodes and internal black deposits usually indicate a mixture of gases in the cylinder. The owner can increase the engine speed, and lasting a few minutes to burn in the electrode above a layer of black soot layer.