Of course, bad spark plugs will eventually cause your car’s engine to misfire and further result in jerking when you accelerate. This is because a vehicle’s spark plugs trigger the flow of current that ignites the combustion process. Defective spark plugs will automatically not trigger the flow of adequate current from the ignition to the engine’s combustion chamber. If you manage to get a good engine start, the car may likely jerk while accelerating. Unfortunately, this challenge can linger on for a while until you replace the bad spark plugs.