What are the reasons for a car not moving when starting?
1 Answers
The reasons for a car not moving when starting are as follows: 1. Weak battery: The symptom is that the starter begins to turn but lacks sufficient speed or power, and later the starter only makes a clicking sound without turning. Low temperatures in winter and forgetting to turn off certain electrical devices can cause the vehicle to fail to start, especially when used for short distances at low speeds over a long period in winter, resulting in the battery voltage dropping below the rated value, making it impossible to start or operate normally. 2. Poor ignition system performance: In very cold weather, due to low intake air temperature, fuel does not atomize well in the cylinder. If combined with insufficient ignition energy, this can lead to cylinder flooding, where excessive fuel accumulates in the cylinder, exceeding the ignition limit concentration and preventing the engine from starting. Emergency solution: Remove the spark plug, clean the oil between the electrodes, and reinstall it to start the engine. 3. Valve gumming: In winter, especially after using unclean gasoline, the gum in the gasoline, which is non-combustible, accumulates near the intake and exhaust valves and the combustion chamber, making it difficult to start on cold mornings or even preventing ignition. 4. Fuel flow obstruction: The symptom is no fuel pressure in the engine's fuel supply pipe. This often occurs on extremely cold mornings due to long-term dirt in the fuel lines. At very low temperatures, water and debris mix, blocking the fuel lines and preventing the engine from starting. 5. Frozen exhaust pipe: The external symptom is foggy cylinder pressure with normal fuel and power supply, but the engine won't start. This is common in vehicles used very infrequently, such as those driven only very short distances between home and work. Water vapor from engine combustion freezes in the muffler of the exhaust pipe. If the ice from yesterday's short trip hasn't melted and new ice forms today, over time this affects exhaust flow, and in severe cases, the engine cannot start.
