Refuel Vapor Control Valve (Aerio)

WARNING: This page is about a different car, the 2003 Suzuki XL-7, 2003 Suzuki Vitara, 2003 Suzuki Grand Vitara, and 2003 Suzuki Aerio. However, it is still accessible from the selected car via links, so may be relevant.

Check refuel vapor control valve for damage.
Apply 10 kPa (75 mmHg) vacuum to nozzle "A" while holding body with its upper cap facing downward and closing nozzle "B" with finger using vacuum pump gauge and check that vacuum is maintained at that level (there is no leakage). See Fig 1 . If vacuum leaks, replace.
Tilt refuel vapor control valve gradually while holding float in the body through hole "A" to keep it still. Then check that the valve on top of float moves smoothly. See Fig 2 . If found malfunctioning, replace.
Put refuel vapor control valve in kerosene and check that float moves smoothly to contact valve seat. See Fig 3 . If found malfunctioning, replace.

Fig 1: Testing Refuel Vapor Control Valve (Aerio - 1 Of 3)

Courtesy of SUZUKI OF AMERICA CORP.

Fig 2: Testing Refuel Vapor Control Valve (Aerio - 2 Of 3)

Courtesy of SUZUKI OF AMERICA CORP.

Fig 3: Testing Refuel Vapor Control Valve (Aerio - 3 Of 3)

Courtesy of SUZUKI OF AMERICA CORP.