Solutions to unstable idle speed, high idle speed and low idle speed

1. Adjust the idle speed, and make the engine run at the lowest stable speed by adjusting the throttle opening adjusting screw.

2. Clean the throttle. If the problem still exists, according to the specific reasons, increase the speed to clean up the engine carbon deposit, or replace the spark plug and engine air filter. 80% of the fuel vehicle idling instability is caused by dirty throttle or engine carbon deposit.

3, carbon deposition or spark plug aging affect the ignition efficiency, or the engine air filter is too dirty and the oil circuit is not smooth. Replace spark plug and engine air filter element or fuel filter. If the carbon deposit is serious, you must go to a professional garage to clean up the carbon deposit in the engine.