Vacuum Regulator Valve (VRV)

Fig. 131 Testing the vacuum regulator valve:

1. Disconnect the vacuum hose (white stripe) from the vacuum regulator valve (VRV) and connect a hand vacuum pump to the VRV, Fig. 131.
2. Apply a vacuum of 53 kPa (15 in. Hg) to the VRV.
3. Verify that the VRV leaks while the engine is stopped and holds while the engine is operated at 3,500 rpm.