
Originally Posted by
matti4556
I suspect during periods of damp and high humidity the powdered desiccant (and the filters get rusty) really clogs up at that end of the canister where this exhaust pipe connects. (The humidity comes into the system backwards passively when car sits)
Just to clarify this particular point. No. The exhaust valve is a pilot driven valve and the system is set up to always keep the gallery (of which the desiccant canister is a part) above ambient pressure (anywhere between 1 & 4 bar) in the gallery. There is no way for ambient moisture to get into the desiccant while the system is idle.
The intake and exhaust both happen from the same end of the canister, so that's the end with the highest moisture content. The outside end of the cap is the gallery end.
MY08 D3 - The Antichrist - "Permagrimace". Turn the key and play the "will it get me home again" lottery.
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