200SX L4-2187cc 2.2L SOHC (Z22E) (1982)
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Fuel Tank Vacuum Relief Valve: 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.
