FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Fuel Filler Cap

Filler Cap Vent Limits
Pressure Release 13.45 kPa (1.58 to 1.95 psi)
Vacuum Release 0.97 to 2.0 kPa (0.14 to 0.29 psi)