Comments by "Buz Off" (@buzoff4642) on "Ratchets And Wrenches" channel.

Thank you for the overview of how this is supposed to work. Are gas vapors so prolific that they needed to create this horrific overly complicated EVAP system? I understand one-way valve letting air in for gas burnt so it doesn't create a vacuum. I don't understand the reason for a purge out of air, which looks to be where the complexity comes in, in system design, maintenance and repair.
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@johnsaccoccio7373 I'm fairly close to that (perfectly running and safe, sent to the crusher) myself. Dealer and mechanics can't resolve P0455, for the past 2 years. I don't understand the necessity of having the system open for purging. Closed fuel system with one-way inlet of air to avoid vacuum, would seem to do the job.
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@myRatchets Rust where gas cap sits on filler neck, another cause of P0456, P0455.
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@reweydewy Verbally, when it comes to large leak, they tell me their guessing which part, as they've replaced them one by one. Now that I want a state waiver from any more evap bills, in writing, it says "Customer is refusing general diagnostics." ?!?
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Yes. If it has two purge valves and only one is working/opening, it won't know the other is failing. Here's an example of two valves, both are failing to open, and no mention of PCM faults. https://www.youtube.com/watch?v=RXwDZ8O7hyw
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