EVAP Canister Inspection
WARNING: This page is about a different car, the 2003 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
- Remove the EVAP canister.
- Visually inspect the EVAP canister, especially at the arrows, for any cracks or damage. See Fig 1 .
- Plug the vent port (4). The vent port will remain plugged for all tests. See Fig 2 .
- Block the purge port (3) closed. See Fig 2 .
- Blow air with a pressure of 0.25 psi (1.7 kPa) into the EVAP vapor port (2). See Fig 2 .
- Verify that air flows out of drain hose (1). See Fig 2 .
- Block the purge port (3) and the drain hose (1) closed. See Fig 3 .
- Blow air with a pressure of 0.25 psi (1.7 kPa) into the EVAP vapor port (4).
- Verify that air does not flow out of the air inlet port (2). See Fig 3 .
- Block the air inlet port (2) closed. See Fig 4 .
- Connect Hand Vacuum Pump (J 23738-A), or equivalent, to the purge port (1). See Fig 4 .
- Apply 1.0 in. Hg of vacuum to purge port (1) with the hand vacuum pump. See Fig 4 .
- Verify that the vacuum holds while the air inlet port (2) is closed. See Fig 4 .
- Open the air inlet port (2) and verify that the vacuum is released. See Fig 4 .
- Block the air inlet port (1) closed. See Fig 5 .
- Connect the hand vacuum pump to the EVAP vapor port (3). See Fig 5 .
- Apply 1.0 in. Hg of vacuum to the EVAP port (3) using the hand vacuum pump. See Fig 5 .
- Verify that there is vacuum pressure at the purge port (2). See Fig 5 .
- Replace the EVAP canister if the canister failed any of the inspections or tests.