Feeling your car jerk when you press the gas pedal? That sudden jolt isn’t just frustrating, it’s a sign that something under the hood needs attention. At Doc Motor Works Auto Repair in Plainfield, IL, we diagnose this issue all the time, and while the cause can vary, it’s usually one of a few common reasons.
Here’s what might be going on:
1. Gunked-Up Fuel Injectors
Fuel injectors need to spray fuel in a fine, even mist for your engine to run smoothly. When they get dirty or clogged, that spray becomes uneven, leading to hesitation and jerking when accelerating. You might also notice your MPG dropping. A professional fuel system cleaning typically clears things up.
2. Old or Damaged Spark Plugs
Spark plugs fire the fuel-air mix in your engine. If they’re worn or fouled, that ignition can misfire and you’ll feel it as if your car stumbles or bucks under the load. A quick spark plug replacement can make a huge difference.
3. Transmission Trouble
If your car hesitates, lurches, or shifts roughly when accelerating, the transmission could be the issue. It may be slipping between gears or struggling to engage properly. Depending on the problem, it could be something simple, like low fluid, or something more serious. Either way, it needs to be checked soon.
4. Air Leaks in the Vacuum System
Your engine relies on a balanced fuel-to-air ratio. If a vacuum hose is leaking, that balance is thrown off, causing rough performance and jerky acceleration. A smoke test can identify any leaks, so they can be repaired.
5. Worn Motor Mounts
Motor mounts keep the engine secure to the frame. If they wear out or break, the engine can shift slightly under acceleration, making the whole car feel like it’s jerking or lurching. Replacing bad mounts will stabilize the engine and eliminate movement.
6. Clogged Air or Fuel Filters
When filters get dirty, your engine may not get the airflow or fuel it needs. That can lead to weak acceleration and jerky behavior, especially when stepping on the gas. Changing filters is a simple maintenance job that can prevent bigger car problems.
Get It Looked at Before It Gets Worse
If your vehicle jerks during acceleration, it’s a warning sign you don’t want to ignore. Catching the problem early can save you time, money, and bigger headaches down the road.
At Doc Motor Works, our team in Plainfield uses advanced diagnostics to track down the issue fast and fix it right the first time. Whether it’s a quick tune-up or a more involved repair, we’ve got your back.
Need expert auto repair with friendly, honest service? Call us or book an appointment today, let’s get your car running the way it should.