2018 Land Rover Range Rover Has A Vacuum Leak

Diagnosing Vacuum Leaks in Your 2018 Land Rover Range Rover and Effective Repair Strategies

Find Repair Location
Reviewed by
Devin Cabugcal
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 2018 Land Rover Range Rover 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 2018 Land Rover Range Rover 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

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 2018 Land Rover Range Rover?

When diagnosing a vacuum leak in a 2018 Land Rover Range Rover, it's essential to adopt a systematic approach that prioritizes simpler methods before progressing to more complex diagnostics. Begin with a thorough visual inspection of the vacuum hoses and connections, looking for any signs of wear, such as cracks or loose fittings. This initial step can often reveal obvious issues that are easy to fix. Next, start the engine and listen for any hissing sounds, which can indicate escaping air from a leak. If these preliminary checks do not yield results, consider using a smoke machine to introduce smoke into the vacuum system; this method is highly effective in visually identifying leaks. Alternatively, spraying soapy water on the hoses while the engine runs can also help, as bubbles will form at the site of a leak. For a more precise diagnosis, utilize a vacuum gauge to measure the vacuum levels, as lower readings can confirm the presence of a leak. Finally, scanning the vehicle's onboard diagnostics with an OBD-II scanner can provide error codes that may point to specific issues within the vacuum system. By following this structured diagnostic approach, you can effectively identify and address vacuum leaks in your Range Rover.

What are the common causes of a vacuum leak in a 2018 Land Rover Range Rover?

Understanding the common causes of vacuum leaks in a 2018 Land Rover Range Rover is crucial for any DIY mechanic aiming to maintain their vehicle's performance. One of the primary culprits is damaged or deteriorated vacuum hoses, which can crack or become loose over time, allowing air to escape and disrupting the engine's air-fuel mixture. Additionally, a faulty intake manifold gasket can lead to significant leaks, as it seals the manifold to the engine block and any wear or damage can compromise this seal. Cracked or damaged vacuum fittings are another frequent issue, as they can easily develop leaks that affect the entire vacuum system. Furthermore, a malfunctioning vacuum pump can also contribute to leaks, as it is responsible for creating the necessary vacuum pressure. Lastly, loose or improperly sealed components, such as the throttle body, brake booster, or PCV valve, can exacerbate the problem if not secured correctly. By being aware of these potential issues, DIY enthusiasts can perform regular inspections and maintenance to identify and address vacuum leaks promptly, ensuring their Range Rover operates smoothly and efficiently.

How urgent is it to address a vacuum leak in a 2018 Land Rover Range Rover?

Addressing a vacuum leak in your 2018 Land Rover Range Rover is crucial for maintaining the vehicle's performance and longevity. A vacuum leak can lead to a range of issues, including rough idling, stalling, and decreased fuel efficiency, which can significantly impact your driving experience. If left unattended, these symptoms can escalate into more severe problems, such as engine misfires and starting difficulties, potentially resulting in costly repairs. Moreover, neglecting a vacuum leak may even damage critical components like the catalytic converter, leading to further complications. By taking prompt action to identify and repair a vacuum leak, you not only enhance your vehicle's performance but also prevent more extensive damage down the line, ultimately saving you time and money. Therefore, it is essential to prioritize addressing any signs of a vacuum leak to ensure your Land Rover operates smoothly and efficiently.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.