What Causes the Unstable Idling Speed of the New Santana?
1 Answers
The reasons for the unstable idling speed of the New Santana include excessive carbon deposits, fuel supply system failure, and misfiring. Below is a detailed explanation of the causes: Excessive Carbon Deposits: Severe carbon buildup inside the engine cylinders can lead to clogged spark plugs and valves, directly causing the car to shake during idling. Fuel Supply System Failure: Unstable fuel pressure can easily cause fluctuations in the concentration of the air-fuel mixture, resulting not only in shaking but also in unstable idling. It is advisable to first consider replacing the fuel filter, as prolonged use may cause the filter element to clog. Then, check the fuel pressure bypassing the fuel filter; if it is abnormal, the issue might lie with the fuel pump. Misfiring: If the ignition coil malfunctions or the spark plug fails to fire for some reason, shaking will occur.