What is the reason for the unstable idle speed of gasoline generator?

The reasons for the instability of automobile idle speed include the blockage of idle air metering hole, poor working of idle device, weak spark of spark plugs in individual cylinders, lax sealing of individual valves, air leakage in intake manifold, early or late ignition time, improper idle speed adjustment, etc. The most direct way to adjust the idle speed is to adjust the idle speed. By adjusting the throttle opening adjusting screw, the engine can run at the lowest stable speed.

Before adjusting the idle speed, it is necessary to carry out a series of inspections on the car, such as normal engine temperature, proper valve clearance, normal ignition system, good sealing of all pipelines, full throttle opening and tight throttle closing. Therefore, it is not recommended for the owner to operate. It is best to go to a professional repair shop or a 4S shop for adjustment.

Solution:

1. Clean the electronic throttle regularly.

The idling of vehicles equipped with electronic throttle is unstable, which is mostly caused by electronic throttle pollution. Once the electronic throttle is seriously polluted by dust, it will lead to unstable idle speed of the engine, poor acceleration of the vehicle, heavy accelerator pedal, increased fuel consumption, excessive exhaust emissions, and even idling and flameout in severe cases, but it will be very stable when driving at medium and high speeds.

2. Check the leakage of the air intake system.

The leakage of air intake system is mainly concentrated at the joint of vacuum hose, bellows and throttle. Use a vacuum gauge to check the vacuum degree of the engine intake system at idle speed. When the vacuum degree of the air inlet is lower than 17.8kPa at idle speed, the air inlet system should be mainly checked for external leakage.