'95Caprice SS conversion - Bonny Buckets - 96 Column, Shifter and Console - 3.73 Gear and Herter tune - Z/28 Cluster - Blazer OH Console - Green/Pink bushings - Chromed Impala Wheels - Eibach Springs and Bilstein Shocks - Corvette Engine Dress - the list goes on and still more to do...it never ends.
ya but i mean the bigger valve the one that has arrows both sides are blue i mean the side with the holes one side of hole is silver metal piece in there the other side is clear and goes straight through
maybe the new replacement vent harness are now silver/blue. the blue goes towards intake as has been posted
I do know that if reversed your opti will fill up with crud from condensation quickly. Mr Goodwrench reversed mine during service back when the car was in warrenty...killed 5 optis within 500-1000 miles before "I" found the cause. All were under warrenty but what a PIA at the time.