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: Two wires and a hose have come and gone underneath the drivers to new the center I don't know what they are and my cars not running.

Looks like the wiring to the PCM have came off to the fuse box and is dangling. The pink wire goes to the PCM fuse. The white wire may go to the fuel pump relay or the ground to the...

Q: My van is misfiring. Can I drive 400 miles before changing them? I'm traveling home now

Hi and thanks for contacting YourMechanic. If the Check Engine Light says that your vehicle has a misfire, then you will need to check the spark plugs and wires. I suggest replacing the spark plugs if they have hot spots,...

Q: Hello,I drive a 96 Nissan maxima. It doesn't do this all the time but when I come to a stop in my car, sometime the rpm goes almos

Hello. A lack of acceleration and low RPMs at a stop can be caused by several components. When it comes to running issues like these, always start with the simple fixes first and then if the symptoms continue, you can...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.