no hiss opening gas cap

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  • #990834
    John MooreJohn Moore

      did a prepurchase inspection on the same vehicle twice. three times opening the gas cap, and no hiss sound, i.e. no gas tank vacuum or positive pressure. is this a red flag?

      2016 Honda Odyssey EX-L

      the system is vented, but it looks like there are 3 different pressure sensitive valves it has to get through to get to the vent, and i cant imagine they all try to equalize pressure to the vent because then why would there be valves.

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