If you're a car owner, you've likely experienced it at least once. You press down on the gas pedal, only for your car to jerk forward, sometimes so violently that it makes you jump in your seat. It's an unnerving experience, but what exactly is going on when your vehicle jerks when accelerating? Redditers have shared their experiences, and here's what we know.
What Causes a Car to Jerk When Accelerating?
According to Redditers, the most common cause of a car jerking when accelerating is a problem with the spark plugs or spark plug wires. A spark plug is an electrical device located in the cylinder head of a car's engine. It produces the spark that ignites the fuel and air mixture inside the engine, which drives the car forward. If the spark plug is worn out or has a bad connection, it can cause the engine to misfire, leading to a jerking sensation when accelerating.
What Are the Symptoms of a Bad Spark Plug?
When a spark plug is going bad, it can cause several symptoms in your car. These include a decrease in fuel efficiency, rough idling, and engine misfires. You may also notice a decrease in power and acceleration, and your car may start jerking when accelerating. Spark plug wires can also cause similar symptoms if they are worn or have a bad connection.
How to Diagnose a Bad Spark Plug
If you suspect that your car is experiencing a spark plug or wire issue, you'll need to diagnose it. The first step is to check the spark plugs and wires for wear and tear. You can do this with a flashlight and a magnifying glass. If the spark plugs or wires are worn or have a bad connection, you'll need to replace them.
How to Replace Spark Plugs and Wires
Replacing spark plugs and wires is a relatively simple process. First, make sure to disconnect the battery and take the necessary safety precautions. You'll then need to remove the old spark plugs and wires and replace them with new ones. Make sure to check the gap between the electrodes, as a gap that is too wide or too narrow can cause misfiring. Once the new plugs and wires are installed, reconnect the battery and start the engine to make sure everything is working properly.
What to Do if the Problem Persists
If your car continues to jerk when accelerating after replacing the spark plugs and wires, you may have a bigger problem on your hands. It could be a problem with the fuel delivery system, the ignition system, or even a transmission issue. In this case, it's best to take your car to a qualified mechanic and have them diagnose the issue.
When your car jerks when accelerating, it can be a nerve-wracking experience. Fortunately, the most common cause of this issue is a problem with the spark plugs or spark plug wires. If you suspect this is the case, you can replace the plugs and wires yourself. If the problem persists, you'll need to take your car to a qualified mechanic for a more thorough diagnosis.