90 Quattro 20V L5-2309cc 2.3L DOHC (7A) (1990)
Rollover Valve: Testing and Inspection
1.
Remove valve, hold in the normal vertical position and blow through the vapor hose connection.
^
Should have flow through valve.
2.
Tip valve up at 45° or more and blow through valve.
^
Should not have flow.
3.
Replace if necessary.