Vems Carbon canister freq valve

[anton]

sorry for the stupid question but what oes the carbon canister do?? isn't it something to do with fuel tank pressure relief or am i confusing it with something else??

Ant

[S2central.net]

That would be an alternative approach alright

[GazzaG60]

why not just put that old charcoal in the bin.

[S2central.net]

I've seen duty cycles of the order of 5-10% on the EVAP valve, but its important to know it is only used when the manifold is in vacuum.

On an ABY/AAN or ADU you can easily log this with VAGCOM to study further - I've never paid much attention to it...

[peter_jensen]

Does anyone know how the Carbon canister freq valve work an when is it active?
S2
My plan is to control it by Vems



Peter