EVAPORATIVE EMISSION CONTROL SYSTEM (For catalyzer model) — Inspection (Cont'd)

EF & EC-133prose procedure

For catalyzer (catalyst) model only

Inspection (Cont'd)

1
Wipe clean valve housing.
SEC308A
2
Inhale air through the cap. A slight resistance accompanied by valve clicks indicates that valve is in good mechanical condition. Note also that, by further inhaling air, the resistance should disappear with valve clicks.
3
If valve is clogged or if no resistance is felt, replace cap as an assembly.

1
Blow air through connector on fuel tank side. A considerable resistance should be felt and a portion of air flow should be directed toward the canister.
SEC309A
2
Blow air through connector on canister side. Air flow should be smoothly directed toward fuel tank.
3
If fuel check valve is suspected of not properly functioning in steps 1 and 2 above, replace it.

Parts DiagramFig. fig1

#	Part Name	Notes
1	Spring	—
2	Valve	—

Component LocationFig. fig2

Fuel check valve showing flow directions between fuel tank side and carbon canister side

1Fuel tank side(top-right of valve body)

2Air(middle, arrow pointing right)

3Fuel vapor(middle, arrow pointing left (filled))

4Carbon canister side(bottom-right of valve body)