Car Loses Power While Driving and Jerks

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Car Loses Power While Driving and Jerks

If your car keeps on jerking whenever you try to accelerate, it could be a result of many things. Power loss can be one of the factors. But if you realize that your car jerks when accelerating at low speeds, you need to identify the problem and have it fixed immediately. Otherwise, it may cause unrepairable engine damage. Here are the possible reasons. 

Reasons Why Your Car Jerks When You Accelerate

For the car engine to run, the air and fuel ratio efficiently must be balanced for proper combustion to take place. An imbalance ratio makes the car engine to skip one combustion cycle process, which results in a misfire. The misfire causes your car to jerk. Here are the reasons why.

1. Work out Ignition Parts

The ignition parts include the spark plugs, the ignition wires as well as the coil packs. After some time, these parts become worn out. If you fail to replace them immediately, they cut off the electricity that goes to your spark plug. As a result, there will be no sparks that ignite the fuel in the piston cylinder. That causes the engine to misfire on the affected cylinder. You should not ignore that problem since it keeps on worsening. Once you realize that they have worn out, replace them immediately. 

2. Damaged Engine Cylinder

A damaged engine cylinder affects the combustion process causing an engine misfire. You will quickly know if your engine cylinder is damaged. You should take it to the mechanic immediately since it can ruin your engine completely. 

3. Moisture In-Car Distribution Cap

If you usually park your car outside even during the cold season, the humidity collects inside the car’s distribution cap. As a result, your car engine becomes imbalanced, making it have lurching motions every time you accelerate. You can avoid this problem by parking your car in a warm place when the weather is cold. 

4. Faulty Air/Fuel Mixture

The fuel system could make your car lurch whenever you start accelerating. Dirty fuel injectors can cause an engine misfire since it disrupts the fuel flow to the engine. Below are fuel components causing the engine oil to misfire. 

a. If a dirty EGR valve sticks and at the same time reroute exhaust emission into your intake manifold, it causes a misfire.

b. If your car has a weak fuel pump, it will fail to provide enough pressure that pumps the fuel into your engine. When driving on a steep hill, your vehicle will keep on lurching. 

c. The work of a carburetor is to control air and fuel mixture before it flows to the engine. If a carburetor is damaged, it will not regulate the air and fuel amount that goes to your engine cylinder. As a result, the combustion chamber gets affected.  

d. A clogged catalytic converter can be another fuel system reason why your car jerks. If it clogs, it will not regulate the emission that leaves your vehicle, therefore, causing it to jerk. The catalytic converter can block due to the high amount of air-fuel mixture that passes through it. You can quickly solve the problem by using an excellent catalytic converter cleaner. If the problem continues, you should seek the services of your mechanic immediately. 

Another fuel system problem that can cause jerking is the leaky fuel line. The air flowing to the engine should have pressure. If the fuel line is leaky, it creates pressure loss resulting in the car lurching when accelerating. You should fix the problem immediately since it can cause engine fires as well as an explosion. 

In case there is a fuel system problem, you will quickly know since the engine line will appear. You can avoid blockage and clog by cleaning the fuel system component regularly.

5. Poor Usage Of The Clutch 

Maybe you keep on asking, why does my car jerk when I accelerate? The problem could be due to poor usage of the clutch. The engine is connected to the transmission by the clutch and also to the wheel. If you disengage the clutch abruptly when you shift the gears, it results in the interruption of the connection. When you try to drive and accelerate, you will experience a bucking motion. You can stop the jerking by using your clutch correctly. 

The car can jerk at the same time lose power when you try to accelerate

​Reasons for Losing Power

1. Dilapidated Spark Plugs

The spark plug is an essential component when it comes to the combustion process. It carries the electric signal to the combustion chamber from the ignition coil. Once it becomes faulty, the electrical signal fails to reach the engine properly. That makes your car not accelerate well. 

2. Levels of Compression

With the help of cylinder compression, internal combustion generates power that makes the vehicle accelerate. Low levels of compression generate insufficient power causing acceleration problems. 

3. Defective Fuel Pump

If you notice that your car has a problem with accelerating, it could be a result of a defective fuel pump. The work of the fuel pump is to supply fuel into the gas tank to help in engine combustion. It also regulates the fuel pressure. Any defect causes poor functioning making your car not start. 

4. Damaged Air Filter

The work of the air filter is to keep off the debris and the bugs off the chamber. When it gets damaged, the debris will enter, causing driving problems. 


The issue of car jerking can be disgusting and uncomfortable. Fortunately, you can quickly resolve it and prevent it from re-occurring. You can avoid some of the problems with the regular servicing of your car. You need to know not only how to identify but also to troubleshoot engine issues such as misfiring. They will save you money and time. There are problems that you can fix on your own. Some require you to visit your mechanic. You should not ignore the jerking challenge since it might cause misfiring and result in severe engine damage.

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