The first cause that can make your car experience jerking while driving is the spark plugs. The main function of spark plugs is to generate a high-voltage electrical spark to ignite the air-fuel mixture in the combustion chamber, enabling the engine to start and operate.
Therefore, if the spark plugs are loose or worn, it can result in inconsistent electrical currents, leading to a lack of spark in each combustion cycle. To fix this, you may need to replace or re-seat the spark plugs securely.

“Regardless of checking if the spark plug of your car has slipped or deteriorated, don’t forget to check if it’s faulty. This is also a cause of engine jerking. The reason for a faulty spark plug is the duration of use. To check if the spark plug is still functioning well, put your hand near it when the engine is turned off. If it still feels warm or hot, it means the spark plug is still working. However, if it feels cool, it indicates that the spark plug is faulty.”

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Another cause of engine stuttering is a dirty air filter. When dust accumulates on the filter, it can prevent air from reaching the combustion chamber, leading to engine stuttering, black exhaust smoke, and increased fuel consumption. This issue is common in used cars that haven’t had their air filters checked or properly cleaned.

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The carburetor is a component in a car that helps mix fuel with air in the correct ratio. It delivers the vaporized mixture into the cylinders in the right amount, making it easier to start the engine and ensuring that the engine performs efficiently when accelerating.

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Sometimes, it’s hard to tell if the fuel you’ve just put into your car is of good quality. You may only realize there’s an issue when you start driving and the engine begins to sputter or lacks acceleration. Poor quality fuel can contribute to these symptoms.

It’s recommended to let the low-quality fuel run out before refilling with new fuel. If the issue persists, check for any leaks in the fuel tank. If there is a leak, it’s crucial to get the fuel tank replaced immediately to avoid wasting fuel and to ensure your vehicle runs efficiently.

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