Fuel Tank Pressure Control Valve
WARNING:
DO NOT try to suck air through fuel tank pressure control valve. Fuel vapors inside valve are extremely harmful.
- Disconnect hoses and remove fuel tank pressure control valve. Blow into TANK port. See Fig 1. Air should flow out of CAN port smoothly when blown hard. If valve operates as specified, go to next step. If valve does not operate as specified, replace tank pressure control valve and retest.
- Blow air into CAN port. Air should come out of TANK port, even if blown softly. If valve operates as specified, go to next step. If valve does not operate as specified, replace tank pressure control valve and retest.
- Use vacuum pump attached at vacuum port to open valve. Blow into TANK port. Air should freely flow out of CAN port. If valve does not operate as specified, replace tank pressure control valve and retest.