Could y'all walk me through the evap system?

[JFP in PA]

I would check the valve first, it can also get plugged or become inoperative.

[78F350]

Meanwhile, I'm replacing the fuel line vent valve on a car that spits out gas when you try to fill it. I hope you don't mind if I add this here for future reference to the evap system for others who end up here.

This tech article is on the 996 section of the PelicanParts DIYs, but it is identical to the system on my '01 986:

https://www.pelicanparts.com/techarticles/Porsche-996-997-Carrera/106-FUEL-Replacing_Your_Fuel_Line_Vent_Valve/106-FUEL-Replacing_Your_Fuel_Line_Vent_Valve.htm

Video included on that page:


Maytag - I'm going to be pulling the evap system out of a parts car (low flood damage). Let me know if you want any cheap 'probably good' parts from an '01.

[maytag]

Originally Posted by JFP in PA

I would check the valve first, it can also get plugged or become inoperative.

That's what I'd like to do.... but I'm too fuzzy still. I assume the valve is holding vacuum from the intake, right? Or is it holding pressure from the tank / evap?
And should it be "open" or "Closed" (flowing either vacuum or pressure) when voltage is applied?
And under what circumstances is that voltage applied / not applied?

Originally Posted by 78F350

Maytag - I'm going to be pulling the evap system out of a parts car (low flood damage). Let me know if you want any cheap 'probably good' parts from an '01.

That sounds very interesting to me. ABSOLUTELY. I'd say let's think about the canister & the purge valve and whatever else makes sense right there.