Who is correct about the Non-Enhanced EVAP system?

Who is correct about the Non-Enhanced EVAP system?

• A. Only Inspector A is correct; a Non-Enhanced EVAP system does not incorporate a Leak Detection Pump (LDP).
• B. Only Inspector B is correct; it does incorporate an LDP.
• C. Both inspectors are correct; it does not have LDP by default.
• D. Neither inspector is correct.

Answer: (A)

Non-Enhanced EVAP systems do not include a Leak Detection Pump. The Leak Detection Pump is a feature of Enhanced EVAP designs, added to pressurize the system and perform leak tests as part of the diagnostic process. Since a Non-Enhanced system lacks that dedicated pump, there is no LDP by default. That’s why the inspector who states there is no LDP is correct. The idea that an LDP exists in a Non-Enhanced setup isn’t accurate, because that pump is specific to the Enhanced configuration.

Non-Enhanced EVAP systems do not include a Leak Detection Pump. The Leak Detection Pump is a feature of Enhanced EVAP designs, added to pressurize the system and perform leak tests as part of the diagnostic process. Since a Non-Enhanced system lacks that dedicated pump, there is no LDP by default. That’s why the inspector who states there is no LDP is correct. The idea that an LDP exists in a Non-Enhanced setup isn’t accurate, because that pump is specific to the Enhanced configuration.