English 
oil pressure gauge bouncing at idle
When the car oil pressure gauge bouncing at idle, the reasons for the jumping up and down of the tachometer may be: idling vibration, air conditioning compressor problems, and problems with the tachometer itself. Among them, turning off the air conditioner so that the compressor does not work can be used to troubleshoot air conditioner problems, and holding the accelerator still to see if the tachometer is beating can troubleshoot tachometer problems. The reasons for idling vibration are much more complicated, mainly considering the following aspects:
1. The engine has serious carbon deposits
The most common cause of vehicle jitter is that the throttle valve is too dirty or the fuel injection nozzle has too much carbon deposit. When there are too many carbon deposits inside the engine, the gasoline sprayed from the fuel injector at cold start will be absorbed by the carbon deposits in large quantities, resulting in the mixture gas being too lean at cold start, making it difficult to start. Saturated, it is easy to start the car. After landing, the gasoline adsorbed on the carbon deposit will be sucked into the cylinder by the vacuum suction of the engine for combustion, and the mixture will become richer. Vibration at idle. In addition, the lower the temperature, the greater the amount of oil required for cold start, and the existence of carbon deposits will affect the smoothness of cold start. The solution is to clean the oil circuit, check whether the idle motor has carbon deposits and should be cleaned.
2. Ignition system problem
Check the working conditions of spark plugs, high-voltage wires and ignition coils. Poor operation of the ignition system and poor flashover of spark plugs can also cause this type of failure. The solution is to check whether there is too much carbon deposit in the spark plug and replace the spark plug.
3. Unstable oil pressure or poor oil quality.
If you have cleaned the engine carbon deposits, washed the throttle valve, changed the oil pad and spark plug, etc., and still find that the body shakes when idling, it is recommended to go to the 4S shop to check whether the fuel supply pressure and the intake pressure sensor are normal. Abnormal or wrong values of the intake pressure sensor and poor work will cause the body to shake. The solution is to check the oil pressure and replace parts if necessary. When the oil quality is poor, jitter will also occur. It is recommended to replace the fuel test at the gas station.
4. Aging of engine components
Car shaking is also related to the aging of the engine foot. The engine foot is actually the shock absorber system of the engine. The engine foot is responsible for absorbing the slight vibration of the engine when it is running. If there is a problem with the engine foot, the vibration will be transmitted to the steering wheel and the cab, causing vibration when idling.
Get a Quote / Info