EGR Valve: Testing and Inspection

Exhaust Gas Recirculation (EGR) valve, checking

Special tools and equipment



^ VAG 1390 Hand vacuum pump




^ VAG 1921 Spring clamp pliers

Test sequence



- Remove clamp -1- at intake manifold -2-.
- Remove vacuum hose from EGR valve.
- Connect hand vacuum pump V.A.G 1390 to EGR valve.




- Operate hand pump and observe membrane rod.
^ Membrane rod must move in direction of arrow.
- Disconnect vacuum pump hose from EGR valve.
^ Membrane rod must move back against direction of arrow to its original position.
If the membrane rod does not move:
- Replace EGR valve and control flap