Ignition coil is faulty: The ignition coil provides power to the spark plugs. If the ignition coil is faulty or has a weak spark, it will not be able to provide the adequate spark to the spark plugs causing the engine to sputter and stall.
Clogged fuel injector: Clogged fuel injectors can prevent fuel from properly entering the engine. When fuel injectors are clogged, the engine will not receive enough fuel to run properly, which can cause it to sputter and stall especially during cold and wet weather.
Defective fuel pump: If the fuel pump is defective, it will not provide the proper amount of fuel pressure to the engine. This will limit the amount of fuel supplied to the engine, causing it to sputter and stall.
Bad oxygen sensor: An oxygen sensor measures the amount of oxygen in the exhaust gases. When the oxygen sensor gives incorrect readings or fails to function properly, the engine's air-to-fuel ratio may become incorrect. This can lead to engine problems, including sputtering and stalling.
Water in the fuel: If water gets into the fuel system, it can cause the engine to sputter and stall. Water in the fuel can corrode fuel system components and cause damage to the engine.
Loose or damaged vacuum hoses: Vacuum hoses are essential for maintaining proper vacuum pressure in the engine. Loose or damaged vacuum hoses can cause the engine to run inefficiently and can lead to sputtering and stalling issues.
Dirty or clogged air filter: A dirty or clogged air filter can restrict airflow to the engine, causing the engine to run rich. Rich running conditions can result in engine sputtering and stalling.
Electrical issues: Electrical problems, such as a bad battery or a loose or corroded electrical connection, can cause the engine to sputter and stall.
