Evaporative Emission System Leak Test

WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

For information on Ford Color Coded Illustrations refer to OEM COLOR CODING .

Check

WARNING: Do not smoke, carry lighted tobacco or have an open flame of any type when working on or near any fuel-related component. Highly flammable mixtures may be present and may be ignited. Failure to follow these instructions may result in serious personal injury.

WARNING: Do not carry personal electronic devices such as cell phones, pagers or audio equipment of any type when working on or near any fuel-related component. Highly flammable mixtures may be present and may be ignited. Failure to follow these instructions may result in serious personal injury.

WARNING: Always disconnect the battery ground cable at the battery when working on an evaporative emission (EVAP) system or fuel-related component. Highly flammable mixtures may be present and may be ignited. Failure to follow these instructions may result in serious personal injury.

With the vehicle in NEUTRAL, position it on a hoist. Refer to: Jacking and Lifting - Overview .
NOTE: Do not apply smoke to the EVAP leak detection control module. Internal module damage may result.

NOTE: Typical application shown in illustration

Connect the VACUTEC Smoke Machine Fuel Evaporative Emission Tester to the quick connect fitting where shown in illustration. Refer to the manufacturer's instructions.

Courtesy of FORD MOTOR COMPANY
Using the VACUTEC Smoke Machine Fuel Evaporative Emission Tester, pressurize the EVAP system.
Monitor the indicator flag on the VACUTEC Smoke Machine Fuel Evaporative Emission Tester. If the measurement is below the indicator flag, the system has passed the leak test and the test procedure is complete. If the measurement is above the indicator flag, the system has failed the leak test. If the leak test has failed, proceed to next step.
Introduce smoke from the VACUTEC Smoke Machine Fuel Evaporative Emission Tester into the EVAP system. Refer to the manufacturer's instructions.
Use the halogen light provided with the VACUTEC Smoke Machine Fuel Evaporative Emission Tester to look for smoke coming from the EVAP system. This would indicate a leak point.
Repair any leaks as necessary.
NOTE: In addition to the VACUTEC leak check, an IDS HEV routine is available to run the on-board leak test. This leak test should indicate whether a leak is present or not but does not necessarily show where the leak is located. The IDS takes approximately 12 to 17 minutes to run depending on fuel level.

Repeat the leak test until the system passes.