PL720 4WD L4-2389cc 2.4L SOHC (Z24) (1983)
EGR Valve: Testing and Inspection
1.
Remove EGR control valve from engine.
2.
Apply vacuum to valve. Valve should move to full-up position and remain there for at least 30 seconds after vacuum is cut off.
3.
Visually inspect valve for damage or deformity.
4.
Clean valve seat with brush and compressed air, and remove foreign matter from around valve and port.