Xterra 2WD V6-3.3L SC (VG33ER) (2003)
Fuel Filler Cap: Testing and Inspection
FUEL TANK VACUUM RELIEF VALVE (BUILT INTO FUEL FULLER CAP)
1. Wipe clean valve housing.
2. Check valve opening pressure and vacuum.
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)
3. If out of specification, replace fuel filler cap as an assembly.
CAUTION: Use only a genuine NISSAN fuel filler cap as a replacement. If an incorrect fuel filler cap is used,the MIL may come ON