Evaporative Emission Control System (Models with catalyzer) - Inspection (Cont'd)
EF & EC-197prose procedureInspection (Cont'd)
Fuel Check Valve
- 1Blow air through connector on fuel tank side. A considerable resistance should be felt at the mouth and a portion of air flow be directed toward the engine.
EC090A - 2Blow air through connector on engine side. Air flow should be smoothly directed toward fuel tank.
- 3If fuel check valve is suspected of not being properly functioning in steps 1 and 2 above, replace.
FUEL TANK VACUUM RELIEF VALVE
Remove fuel filler cap and make sure it functions properly.
Fuel Tank Vacuum Relief Valve
- 1Wipe clean valve housing and place it in your mouth.
SEC961 - 2Suck air. A slight resistance accompanied by valve indicates that valve is in good mechanical condition. Note also that, by further sucking air, the resistance should disappear with valve clicks.
- 3If valve is clogged, or if no resistance is felt, replace cap as an assembled unit.