Is the idle speed of Accord IX a little unstable?

Not normal. Check whether the idle metering hole and idle air metering hole are blocked. If the metering hole is blocked, clean it with gasoline or acetone and blow it with compressed air.

Idle speed is the fault of engine idle speed control system, which is caused by excessive carbon deposition in throttle. It is recommended to go to the repair shop for cleaning. Due to too much carbon and dirt on the throttle valve plate, the cross-sectional area of the air passage changes, which makes the control unit unable to accurately control the idle intake, resulting in the mixture being too rich or too lean.

Carbon deposition will cause insufficient combustion of gasoline and make the engine shake. The influence of engine carbon deposition on automobiles is considerable. First, the engine power is reduced, that is, the power output is uneven and gradually decays, in other words, it is getting less and less powerful.

Extended data:

Precautions:

For carburetor with idle stop valve, check whether the electromagnetic coil circuit of idle stop valve is normal. If the idle fuel-saving metering hole is blocked due to abnormal electromagnetic coil circuit, repair the idle stop valve.

When the idle speed of the engine is too high, start the engine first, and then control the throttle arm by hand to close the throttle. If the idle speed is normal at this time, it means that the throttle tension spring is too soft and should be replaced. If closing the throttle manually is ineffective, check whether the throttle shaft is loose or whether the throttle is closed tightly. If the throttle valve is not tightly closed or the throttle shaft is loose, repair it.

If the throttle valve is normal, check whether there is slight air leakage under the throttle valve. If there is, eliminate the air leakage. If not, further adjust the idle speed until the idle speed is appropriate.

Baidu encyclopedia-idle jitter

Baidu encyclopedia-accord