Separate sealing, actuation and flow
In the training demonstration, the presenter relates purge command to a vacuum-gauge response, then explains why a normally closed valve should not pass vacuum when it is not being operated. This separates mechanical sealing from an electrical command and from the resulting flow.
| Question | Meaning | What it does not establish |
|---|---|---|
| Does it seal when it should be closed? | Addresses unwanted passage through the valve. | Whether its control circuit operates correctly. |
| Does it respond to the intended command? | Addresses actuation in the documented test state. | A click does not measure sealing or flow. |
| Does the expected flow response follow? | Connects valve operation to the path being tested. | One response does not prove the rest of the EVAP system leak-free. |
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Prepared by GoTech with AI assistance. Source wording and the bounded educational interpretation were checked in two reasoning passes by the same assistant. Technician review is pending; vehicle-specific service information and visual details have not been independently verified. Original source files remain unchanged.
- Separate sealing, actuation and flow
- Source demonstration, not an instruction to disconnect, energize or probe an unidentified vehicle. Watch the source · 83:40
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