2017 Chevrolet Corvette Has A Vacuum Leak

Diagnosing Vacuum Leaks in Your 2017 Chevrolet Corvette: Symptoms, Causes, and Repair Solutions

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 2017 Chevrolet Corvette 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 2017 Chevrolet Corvette 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 2017 Chevrolet Corvette?

When diagnosing a vacuum leak in a 2017 Chevrolet Corvette, it's essential to adopt a systematic approach that begins with the simplest methods before progressing to more complex diagnostics. Start with a thorough visual inspection of the vacuum hoses, looking for any signs of damage such as cracks or loose connections. Next, listen for any hissing sounds while the engine is running, as these can indicate the presence of a leak. If these initial checks do not reveal the issue, consider using a smoke machine to introduce smoke into the vacuum system, allowing you to visually identify where the smoke escapes. Another effective method is to spray soapy water on the hoses and connections; if there is a leak, the soap will bubble at the source. Additionally, checking the vacuum levels with a gauge can provide insight, as lower than normal readings may suggest a leak. Don’t forget to inspect the intake manifold gaskets and the brake booster, as these components are common culprits for vacuum leaks. If you still cannot locate the leak after these steps, it may be time to consult a professional mechanic for further assistance. This structured approach not only helps in identifying the problem efficiently but also saves time and resources in the diagnostic process.

What are the common problems associated with vacuum leaks in a 2017 Chevrolet Corvette?

When it comes to vacuum leaks in a 2017 Chevrolet Corvette, several common problems can significantly impact the vehicle's performance. One of the most noticeable symptoms is rough idling, where the engine may shake or vibrate more than usual, indicating an imbalance in the air-fuel mixture. This disruption can also lead to decreased fuel efficiency, as the engine struggles to maintain optimal combustion, resulting in higher fuel consumption. Additionally, a vacuum leak often triggers the check engine light, serving as a warning that something is amiss and requires immediate attention. Drivers may also experience a loss of power, making acceleration feel sluggish and unresponsive, which can be particularly frustrating during driving. In severe cases, vacuum leaks can cause the engine to stall unexpectedly, especially at idle or low speeds, posing safety risks. To maintain the performance and drivability of your Corvette, it is crucial to address these vacuum leak issues promptly. Regular maintenance and inspections can help identify potential leaks early, allowing for timely repairs and ensuring your vehicle runs smoothly.

How urgent is it to address the vacuum leak in my 2017 Chevrolet Corvette?

Addressing a vacuum leak in your 2017 Chevrolet Corvette is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. A vacuum leak can significantly impair engine performance, leading to symptoms such as rough idling, stalling, and a noticeable drop in fuel efficiency. These performance issues can escalate quickly, potentially causing further damage to vital components like the oxygen sensors and catalytic converter, which are essential for your vehicle's emissions control and overall functionality. Moreover, a vacuum leak often triggers the check engine light, serving as a warning that should not be ignored. Promptly resolving this issue not only enhances your Corvette's performance but also helps prevent costly repairs down the line. Therefore, if you suspect a vacuum leak, it is imperative to address it as soon as possible to maintain the integrity and safety of your vehicle.

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.