Frontier XE King Cab 4WD L4-2.4L (KA24DE) (1998)
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.
Pressure: 16.0 - 20.0 kPa (0.163 - 0.204 kg/sq.cm, 2.32 - 2.90 psi)
Vacuum: -6.0 to -3.5 kPa (-0.061 to -0.036 kg/sq.cm, -0.87 to -0.51 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.