EVAP Two Way Valve Test

Special Tools Required
Combination gauge kit (  07YAJ-0010610)
 

Tube joint adapter  (  07410-5790501)
 


1.Remove the fuel fill cap.

2.Remove the EVAP two way valve.

3.Disconnect the vapor line from the EVAP two way valve (A). Connect it to the combination gauge kit and tube joint adapter and the vacuum pump (B) as shown.

 

4.Apply vacuum slowly and continuously while watching the gauge.
The vacuum should stabilize momentarily at 3.5 kPa (26.5 mmHg, 1.0 in.Hg).
If the vacuum stabilizes (valve opens) below 3.5 kPa (26.5 mmHg, 1.0 in.Hg), install a new valve and retest.

5.Move the vacuum pump from the vacuum fitting to the pressure fitting (A) as shown.

 

6.Slowly pressurize the vapor line while watching the gauge. The pressure should stabilize momentarily above 1.0 kPa (8 mmHg, 0.3 in.Hg).

  • If the pressure momentarily stabilizes (valve opens) above 1.0 kPa (8 mmHg, 0.3 in.Hg), the valve is OK.
  • If the pressure stabilizes below 1.0 kPa (8 mmHg, 0.3 in.Hg), install a new valve and retest.