Spark plug ablation

When the owner found Baotou North Mercedes-Benz accessories spark plug at the top of a scar or damage, the electrode melting, ablation phenomenon, have shown that the spark plug has been destroyed, this time should replace the spark plug. During the replacement process, the owner can check the embolism of the spark plug and the color changes.

Symptom 1: The electrode melts and the insulator is white

Diagnosis: This phenomenon indicates that the combustion chamber temperature is too high. This may be too much burning in the combustion chamber, resulting in valve clearance is too small, further lead to exhaust valve overheating or cooling device caused by poor work. In the spark plugs do not press the specified torque will also cause the electrode to melt, the insulator showed a white phenomenon.

Symptom 2: The electrode turns round and the insulator has a scar

Diagnosis: This indicates that the engine is prematurely burned, may be too early to ignite or gasoline octane number is too low, the spark plug hot value is too high and other reasons.

Symptom 3: The top of the insulator is broken

Diagnosis: In general, detonation combustion is the main reason for the breakdown of insulators. The ignition time is too early, low octane number of gasoline, combustion chamber temperature is too high, may lead to engine detonation burning.

Symptom 4: The top of the insulator has gray and black stripes

Diagnosis: The appearance of this strip indicates that the spark plug has leaked, the owner needs to replace the new pieces unconditionally.

There are deposits on the spark plug

Between the tip of the spark plug insulator and the electrode, the deposits are sometimes adhered. Owners do not underestimate this kind of sediment.

In serious cases this may cause the engine to not work properly. In the clean Baotou North Mercedes-Benz accessories spark plug, the vehicle can be properly functioning, but soon after a similar situation. In fact, the spark plug appears to be a superficial phenomenon, which may be a signal of other mechanical parts of the vehicle.

Symptom 1: There are oily deposits on the spark plug

Diagnosis: When the Baotou North Mercedes-Benz accessories spark plugs appear on the oily sediment, it shows that the oil has entered the combustion chamber. If only the individual spark plugs have oily sediment, it may be caused by damage to the valve stem seal. But if the cylinder of the spark plug are sticky with this kind of sediment, then the cylinder appears jump oil. In general, in the case of air filters and ventilation devices blocked, the cylinder is prone to jump oil phenomenon.

Symptom 2: There are black deposits on the spark plug

Diagnosis: The spark plug electrode and the inside have black deposits, usually indicating that the cylinder is mixed too thick. The owner can increase the engine speed and continue for a few minutes to burn a layer of black soot that remains on the electrode.