car jerks when accelerating

Car jerks when accelerating? It is a definite sign of mechanical problems in the vehicle system. This symptom is usually an indication of faulty components that could result in potential problems if you don’t resolve it timely. Also, the unpleasant tug or shake that usually occurs when car jerks can create a panic feeling for car drivers. 

Car jerks can happen for several reasons and it is important to know where the problem arises from to find a resolution as fast as possible. Let’s check out the common causes as we proceed.

Why Does My Car Jerks When Accelerating?

car jerks when accelerating
Source: Absolute Car Care

The experience of car jerks while accelerating often leaves a sour taste in the mouth of car owners. The sudden and uncontrolled movement of the vehicle during this period truncates the smooth movement and makes the car difficult to drive. This problem is usually a result of the insufficient flow of fuel or issues that sparks in the combustion chamber. However, there are other underlying causes of car jerks during acceleration which we will highlight and discuss below.

Faulty Carburetors

Defective carburetors are one of the common reasons why car jerks during acceleration. This is largely due to irregularities in the supply of fuel to the car engine. Carburetors control the mixture of air and fuel before it moves to the engine. A failure to properly perform this function will lead to reduced effectiveness of the car engine. Carburetors can be repaired easily but should be timely replaced when necessary.

Dirty Fuel Injectors

Fuel injectors steadily supply the car cylinders with fuel. During this process, they tend to trap dirt, and this slows them down in functionality. As a result, there would a reduction in fuel flow and this ultimately leads to car jerking. Fortunately, injectors doesn’t necessarily require a replacement as they can easily be fix simply by cleaning them.

Defective Fuel Pump or Fuel Filter

Issues related to fuel supply in engine are common causes of car jerking during acceleration. The fuel pump is designed to pump the needed amount of fuel into the engine for proper functioning while a dirty fuel filter will block the normal fuel inflow into the car engine.

Faulty Spark Plugs

The combustion process of vehicles needs a good spark to ignite the fuel in each cylinder properly. Defective spark plugs won’t have the power to perform the ignition function and this ultimately impacts the car engine performance. The solution to this problem is to have them replaced.

Damaged Acceleration Cables

This specialized acceleration cable can cause car jerking when it is defective or worn out. With the acceleration cable being linked between the gas cable and the engine throttle plate, the car will accelerate when the gas pedal is pressed and the throttle plate is pulled open. A slacked acceleration cable will cause the throttle to malfunction and could result in a total breakdown of the vehicle if is not properly fixed or replaced.

Damaged Fuel Lines

The engine function will be completely compromised if the passage through which fuel runs get damaged. This usually results in loss of pressure and an insufficient supply of fuel in the car engine.

Damaged Cylinders 

Car jerking can also result from defective cylinders. Nonfunctional cylinders will affect the engine performance and the best solution is to repair or replace them.

Closing Remarks

Car jerking while driving at a consistent speed is a sign of potential problems that should be addressed as promptly as possible. Although most of the underlying causes can be easily resolved, the best solution is to seek professional help and conduct a regular check on your vehicle for the early detection of potential mechanical problems.

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