Check valve in the charcoal can?
With several of us at the Auto-X this past Sunday, I noticed that Ron's '92 (build date 1/92) has what looks like a check valve in one of the lines coming out of the top of the charcoal can (?) that is just to the left of the radiator (as you're facing the front of the car). Harry's '96 had the same set up. My '92 (build date 6/91) does not have the check valve. Did Subaru come out with a mod in late '91? Should I be going off and adding this piece (my guess is that it is to keep gas fumes from flowing back in the line).
Thanks in advance for the help on this.
-Bill
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