Fuel Tank Pressure Release Valve: Testing and Inspection

1. Remove filler cap.
2. Remove vapor line from fuel tank on all except 1985 Accord or from liquid/vapor separator on 1985 Accord. Connect suitable vacuum/pressure gauge and pump to hose using T fitting if necessary.
3. Slowly draw a vacuum while observing gauge. Vacuum should momentarily stabilize at .2-.6 inch Hg.
4. If vacuum does not stabilize within specifications, replace valve and repeat test.
5. Slowly pressurize vapor line while observing gauge. Pressure should momentarily stabilize at 1-2.2 inch Hg.
6. If pressure does not stabilize within specifications, replace valve and repeat test.