Just in case you are curious Vapor 2 way valve

[76was124]

My rudimentary testing a few years back indicated that a properly functioning 2 way valve has two different 'open' thresholds depending on pressure or vacuum. Not sure if that's splitting hairs or not, but something I observed.

[RRoller123]

Exactly, there is a higher pressure (or vacuum) setting in one direction versus the other. This was done for a purpose, and the fuel filter won't perform the same function.

(btw, imgur is fantastic, sayonara photobucket)

[joelittel]

Should I be looking into a new charcoal canister to go with my new valve?

[RRoller123]

I can't answer as to whether it still works (charcoal) but you can check and see if it is plugged up? It should allow some air flow with reasonably small pressure through the various orifices.

p.s. The 2-way valve operates in a step function; i.e. there is no air flow until a set pressure is reached, then it opens and allows flow. Also, the step is different in each direction.

[76was124]

There is a metered orfice in the vent cap on the charcoal canister. Plugging it can cause a stall, or not having the cap does impact idle speed.

[PhillySpider]

Bought a NOS valve in the sealed FIAT baggy for $14 off the bay. Very happy, kept the old one as a back up. Don't want a lawn mower fuel filter on our Bella,...trying to go for the original survivor thing...