I bought Citroen Elysee for two years. Recently, a cylinder caught fire occasionally, and it will be fine after a while. What is the reason?

There are many reasons for the fire, such as poor ignition of three cylinders or poor fuel injection of three cylinders, or insufficient cylinder pressure, but poor oil quality will lead to fire. If it is a continuous fire, it is necessary to carefully investigate the above possibilities. If it is only accidental, the frequency of occurrence is quite low. It can be completely ignored. Another reason is that the spark plugs of three cylinders are damaged.

Common faults of Citroen

Phenomenon: the exhaust pipe "chug chug" sounds when idling, but it doesn't sound when the car is cold or not idling.

Solution: Abnormal exhaust noise of hot car engine. The main reason of new car is carbon deposition in throttle or idle valve, which leads to unstable idle speed. If there is abnormal noise during operation, it should be that the valve is ringing.

Suggestion: There may be several reasons for the valve ringing: the oil pump is worn, which leads to low oil pressure when the engine is idling after hot car; The wear of camshaft and valve ejector pin causes the valve to ring when the engine is under low speed and heavy load. There is also the wrong type of engine oil, which leads to low viscosity of engine oil after hot car, resulting in poor lubrication of valve chamber and valve ringing.