EXHAUST EMISSION CONTROLE.G.R. System E.G.R, control system is normal if diaphragm moves upward. If not, check system as in step 3' Disconnect vacuum hose from ElG.Fl. control valve. Increase engine speed from idling to 3,000 to 3,500 rpm. Confirm that thermal vacuum valve is open and that carburetor vacuum is present D W secnzA With engine running at idling speed, push up E,G.R. control valve diaphragm by manually pressing bottom dish. sacrum It is normal it engine loses stability, lnSpection (Cont'd) E.G.R. CONTROL VALVE 1. Remove E.G.R. control valve. 2. Apply the specified vacuum, 13.3 to IJ RP: [100 to "D mmH. 1 to 33 ian) SECL 3. Visually inspect E.G.R. control valve for s: of damage, wrinkle or othenlvise deformatior 4. Clean the E.G.Fl. control valve seat with brL and compressed air. Always use new gasket. secw