What are the causes of idle vibration in Hyundai Verna?

[StDante]

The causes of idle vibration in Hyundai Verna are: 1. Severe engine carbon deposits; 2. Ignition system malfunction; 3. Unstable oil pressure. Taking the 2020 Hyundai Verna as an example, its body structure is a 4-door, 5-seater sedan with body dimensions of: length 4510mm, width 1765mm, height 1470mm, and a wheelbase of 2650mm. The 2020 Hyundai Verna features a MacPherson strut front suspension and a torsion beam rear suspension. It is equipped with a 1.6L naturally aspirated engine, delivering a maximum horsepower of 123PS, a maximum power of 90.2kW, and a maximum torque of 150.7Nm, paired with a 6-speed automatic transmission.

[LaJulian]

The Hyundai Accent I drove the other day would suddenly jerk a few times while idling at a red light, quite noticeably. I figured it might be an issue with the ignition system. If the spark plugs are worn out or severely aged, their ignition efficiency drops, causing engine vibration—a common issue in many cars. Additionally, excessive carbon buildup in the throttle body can obstruct airflow, leading to unstable idling. Insufficient fuel pump pressure or clogged fuel injectors could also contribute to the problem. I’ve also heard that if the engine mounts are worn out, their damping effect weakens, making the vibrations more pronounced. For the Accent, especially as it ages, it’s best to regularly inspect these components. Replacing the spark plugs usually alleviates much of the issue, preventing bigger headaches down the road. If DIY fixes don’t work, getting a mechanic to take a look is worth the small cost—better than risking a breakdown midway.

[DeViolet]

When servicing a car, I've found that idle shaking often stems from several component failures. Worn spark plugs are the most common cause - uneven ignition makes the engine tremble; carbon buildup in the throttle body affects air intake flow, leading to imbalanced combustion; fuel system issues like clogged injectors or dirty filters causing inaccurate fuel injection can also create shaking; and worn engine mounts reduce vibration damping capability. For Hyundai Elantra models, if the ECU misreads data, idle control may become unstable. Regular maintenance is recommended: inspect spark plugs every 20,000 km, and cleaning the throttle body can prevent most issues. Addressing these minor problems promptly extends engine life and ensures smoother driving.

[RachelFitz]

Idle shaking is usually caused by failed spark plugs, with poor ignition leading to unstable engine operation; a dirty throttle body restricting air intake is another factor; fuel supply issues like clogged fuel injectors can cause incomplete combustion; aging engine mounts exacerbate vibrations. Elantra owners experiencing this should first try replacing spark plugs or cleaning the throttle body - these minor actions can provide quick improvement.