Fuel Filler Cap: Testing and Inspection

FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FILLER CAP)




1. Wipe clean valve housing.




2. Check valve opening pressure and vacuum.
3. If out of specification, replace fuel filler cap as an assembly.

Pressure: 15.3 - 20.0 kPa (0.156 - 0.204 kg/sq.cm , 2.22 - 2.90 psi)
Vacuum : -6.0 to -3.3 kPa (-0.061 to -0.034 kg/sq.cm, -0.87 to -0.48 psi)

CAUTION: Use only a genuine fuel filler cap as a replacement. If an incorrect fuel filler cap is used, the MIL may come on.