PL720 2WD L4-1952cc 2.0L SOHC (Z20) (1985)
Fuel Filler Cap: Testing and Inspection
1.
Remove filler cap, wipe clean valve housing, and place cap
in mouth.
2.
Inhale air. A slight resistance should be felt at first but should disappear when valve can be heard clicking.
3.
If valve is clogged or no resistance is felt, replace cap.