DR-22C EGR System CVSCC Valve

This test must be performed with engine at normal operating temperature.
1. Turn ignition switch to the Off position, then remove connector and apply vacuum to EGR-CVSCC valve with coolant temperature above 125°F.
2. If vacuum does not hold, check for leaks or restrictions at the EGR signal hose, from the carburetor.
3. If vacuum holds, replace EGR-CVSCC valve.