1980-87 (Ported EGR Valve)
Check vacuum hoses for correct routing. Disconnect vacuum hose from EGR valve. Run engine to operating temperature. Apply 6 in. Hg to EGR valve. Ensure engine runs roughly or dies. Reconnect vacuum hose.
Check vacuum hoses for correct routing. Disconnect vacuum hose from EGR valve. Run engine to operating temperature. Apply 6 in. Hg to EGR valve. Ensure engine runs roughly or dies. Reconnect vacuum hose.