EGR Valve: Testing and Inspection
1. Remove the EGR valve and check for sticking, carbon deposits, etc.
If such conditions exist, clean with solvent to ensure tight valve seat contact.
2. Connect a manual vacuum pump to the EGR valve.
3. Apply a vacuum of 67 kPa (9.7 psi) and check air tightness.
4. Blow in air from one passage of the EGR to check condition as follows.
CAUTION
- When installing the EGR valve, use a new gasket and tighten to the specified torque.
EGR valve torque: 15 - 22 Nm (11-16 lb.ft)