QVR Valve
- Install vacuum gauge in vacuum line between QVR valve and EPR valve.
- Disconnect hose from inlet port "S" and connect vacuum pump to valve. Apply 22 in. Hg and check that vacuum gauge reads 20.7 in. Hg within 1.7 seconds.
- Reduce vacuum at vacuum pump to 1 in. Hg and check that other vacuum gauge reads the same within 1/2 second.