2022 Kia Soul Has A Vacuum Leak

Troubleshooting Vacuum Leak Issues in Your 2022 Kia Soul: Symptoms, Causes, and Solutions

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
40% chance it's the
Leaking Vacuum Hoses
0%
30% chance it's the
Leaking Gaskets and Seals
0%
20% chance it's the
Bad Actuators and Valves
0%
10% chance it's
Something else
The most common reasons a 2022 Kia Soul has a vacuum leak are leaking vacuum hoses, leaking gaskets and seals, or bad actuators and valves.
  • Leaking Vacuum Hoses: A cracked or disconnected vacuum hose can lead to a loss of engine vacuum, resulting in poor engine performance and increased fuel consumption.
  • Leaking Gaskets and Seals: Aged or damaged gaskets and seals can lead to fluid leaks, resulting in loss of engine oil or coolant and potential engine damage.
  • Bad Actuators and Valves: A malfunctioning actuator or valve can disrupt the proper operation of the vehicle's systems, leading to issues such as poor engine performance or erratic behavior of components like the HVAC system.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2022 Kia Soul has a vacuum leak?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Problems with the intake manifold gasket can create the following symptoms:

  • Illuminated check engine light
  • Erratic engine performance
  • Oil and coolant leaks
  • Poor gas mileage
  • Stalling

» LEARN MORE: Intake manifold gasket symptoms

Rough idling, lack of power, engine oil leaks, engine burning oil, and illumination of the check engine light are all possible if the PCV valve has clogged. If the check engine light comes on, the on-board diagnostics (OBD) trouble codes will most likely relate to manifold vacuum, air and fuel mixture, PCV system, mass airflow sensor readings, and exhaust and emissions readings. These are all affected in the event the PCV valve is clogged, is stuck fully open, or is stuck fully closed, however, if the valve is stuck fully open, the engine oil seals are not in danger of overpressure.

A bad valve cover gasket will result in an oil leak. You may notice oil under the car or on other parts under the hood. You might also notice a burning smell while driving.

» LEARN MORE: Signs of a bad valve cover gasket

Any time there is an emissions fault the check engine light will be displayed. The purpose of the check engine light is to inform the driver that an emission related fault has been found, and that there are on-board diagnostic (OBD) trouble codes stored in the powertrain or engine control module. Additionally, since the emissions systems are so intertwined into engine control and transmission control systems, symptoms may include nearly any sort of drivability concerns. This may include harsh shifting, failure to shift, hesitation on acceleration, jerking, engine failure to start or run, loss of power, or any number of other drivability issues.

What are the steps to diagnose a vacuum leak in a 2022 Kia Soul?

To effectively diagnose a vacuum leak in your 2022 Kia Soul, start with a straightforward approach that prioritizes simpler methods before progressing to more complex diagnostics. Begin by listening for any hissing sounds while the engine is running, as these can be a clear indicator of a vacuum leak. Next, conduct a visual inspection of the vacuum hoses and connections, looking for signs of wear, cracks, or disconnections that could compromise the system. If these initial checks do not reveal the issue, utilize a vacuum gauge connected to the intake manifold to assess for fluctuations or low pressure, which may suggest a leak. For a more hands-on approach, perform a spray test using carburetor cleaner or propane around the hoses; a change in engine RPM can confirm the presence of a leak. If necessary, consider a smoke test to visually identify leaks, as smoke escaping from the system will clearly indicate problem areas. Lastly, if the check engine light is illuminated, using an OBD-II scanner can help retrieve diagnostic trouble codes that may point directly to the vacuum system's issues. By following this structured diagnostic approach, you can efficiently identify and address any vacuum leaks, ensuring your Kia Soul operates at its best.

What are the common problems associated with vacuum leaks in a 2022 Kia Soul?

When dealing with vacuum leaks in a 2022 Kia Soul, several common problems can significantly impact the vehicle's performance. One of the most noticeable symptoms is rough idling, which manifests as an uneven or unstable engine when the car is stationary, particularly at stoplights or while parked. This can be accompanied by a decrease in overall engine performance, leading to reduced power, sluggish acceleration, and diminished fuel efficiency. Additionally, a vacuum leak often triggers the check engine light, serving as an important warning that something is amiss and requires attention. In more severe cases, the engine may stall unexpectedly, especially during low-speed maneuvers or when coming to a stop, which can pose safety risks. Lastly, drivers may experience hard starting issues, where the engine struggles to turn over, necessitating multiple attempts to start the vehicle. Addressing these vacuum leak symptoms promptly is crucial to prevent further engine damage and maintain optimal vehicle performance. If you suspect a vacuum leak, it is advisable to conduct a thorough inspection or consult a qualified mechanic for repairs.

How urgent is it to repair a vacuum leak in a 2022 Kia Soul to prevent safety risks and further damage?

Addressing a vacuum leak in your 2022 Kia Soul is not just a matter of routine maintenance; it is a critical step in ensuring your vehicle's safety and performance. A vacuum leak can significantly impair engine performance, leading to symptoms such as rough idling, stalling, or hesitation during acceleration, which can create dangerous driving conditions. Moreover, neglecting this issue can result in decreased fuel efficiency and may cause long-term damage to the engine, ultimately leading to costly repairs. Additionally, a vacuum leak can compromise essential safety systems, including the brake booster and emissions control system, putting both the driver and passengers at risk. Therefore, it is imperative to address any signs of a vacuum leak promptly to maintain the reliability and safety of your Kia Soul, ensuring a smooth and secure driving experience.

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