Skip the auto shop - Our mechanics make house calls

Q: Car jerking upon acceleration, sluggish engine

asked by on

My car has gone around 170,000 miles. When I apply the gas pedal, the car starts jerking and sputtering. I regularly change the oil. I had all spark plugs replaced. Also, I changed the rotor and cap. After that, I had no issues with the car for a couple of months. However, the same problems are happening again. When I try to give it gas, the engine loses power and occasionally jerks. If I go uphill from being at a stop, it gets even harder to drive it. The car runs okay after it gathered some speed. What should I do?

You will need to have the ignition and fuel systems checked. The fuel pump and filter should be checked for correct pressure and flow due to clogged filter or pump pressure. The ignition should be checked to see if the coils are putting out enough spark or the spark is weak. If the spark is weak or the wires are arching to ground, then it can misfire and jerk. I recommend having these systems checked in order to diagnose and service the jerking issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Blinkers only working part of the time

Hello, the first thing to check is the function of the hazard switch. The turn signals are powered and turned on and off through the hazard switch. If the hazard doesn't work, the first thing to check is the fuses....

Q: Check engine light flashing occasionally

Hello. It is possible that you will need to have your car tuned up again. During this tune-up, it will be important to make sure that the ignition control module, the spark plug wires, and the spark plugs are replaced...

Q: Car lost power & acceleration on the interstate

Hello there, an intermittent car dying issue like you have described is an unusual case. A variety of faults can cause the car to die in this manner such as the fuel pump, battery, wiring, battery cable, or the ignition...

Related articles

What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.