1980-84 All Models Except Diesel
WARNING: This page is about a different variant/trim than selected.
Warm engine to normal operating temperature. Disconnect vacuum hose to EGR valve. Test EGR valve by temporarily connecting vacuum hose from distributor retard diaphragm to EGR valve. Engine should run rough or stall. If not, check for clogged EGR passage or faulty EGR valve.