- Faulty fuel injector: Clogged or worn-out fuel injectors can cause the car to sputter and spit when turned off as they fail to deliver the correct amount of fuel into the engine.
- Spark plug issues: Worn or fouled spark plugs can also cause the car to stutter and sputter as they fail to ignite the fuel properly.
- Ignition coil problem: A faulty ignition coil may not provide the necessary spark to the engine, resulting in sputtering and spitting sounds when the engine is turned off.
- Engine overheating: If the car is overheating, it may cause the engine to spit and sputter as it tries to cool itself down. This can also lead to a leak of water from the coolant system.
- Coolant leak: A leak in the coolant system can cause the car to overheat and sputter when turned off. Check for visible signs of leakage around the radiator, hoses, and water pump.
- Air leak in the intake system: Leaking intake manifolds can throw off the air to fuel ratio, causing engine sputtering, coughing, and even stalling, while also leading to a loss of engine performance and decreased gas mileage.
Recommendations:
- Have your vehicle inspected by a qualified mechanic to identify the exact cause of the sputtering and spitting issue.
- Get your fuel injectors cleaned or replaced as needed.
- Replace worn-out spark plugs and ignition coils.
- Check the coolant level and check for leaks in the coolant system.
- Verify the absence of vacuum leaks in the intake manifold or connected vacuum lines.
- Get the identified issues fixed to ensure your car operates smoothly and safely.
