What is the jitter of Changan Suzuki Alto engine (three-cylinder Alto engine has severe jitter)?

The idling jitter of Aalto three-cylinder is caused by the unclean air filter. The air filter is designed to protect the engine from wear and tear, and it is usually replaced around 65,438+0,000 km. If it is not replaced in time, the engine will shake due to insufficient air intake, so it can be solved by replacing the filter element.

To check idle jitter:

1. Check the empty refrigerant pressure first, because if the refrigerant pressure is too high, the engine will not run at idle speed.

2. It may also be caused by excessive carbon deposition in the engine. Check and clean the oil circuit, fuel injector, throttle, idle motor and air intake of the vehicle.

3. Check whether the initial oil pressure is too low. Due to the long downtime, low oil pressure in the fuel system or poor pressure maintenance of the oil pressure regulating valve, it is impossible to establish a good standard oil pressure in an instant, which is easy to cause insufficient oil injection during cold start and lead to poor start. Check whether the air filter element is too dirty, which affects the intake quality, that is to say, at best, it is caused by insufficient fuel injection when starting.

4. Check whether the idle solenoid valve is stuck due to excessive carbon deposition, which will lead to idle vibration during startup adjustment.