Arthur .... Since you caught me modifying a previous posting, I'll just post another post.

I found the purge valve on the driver's side fender with a vibration mount and two large black tubes. I disconnected and plugged the tube; no effect.

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Jim Villers
190SL, 230SL 5-speed, 95 E320 Wagon, 01 E320 Wagon, MGB, Boxster 'S', 190SL "Barn Find"