EGR Valve Servicing

Figure 19:

1. Disconnect the EGR Valve vacuum hoses.

2. Remove the EGR Valve from the intake manifold.

3. Remove carbon deposits from the EGR Valve passages using carburetor spray cleaner (Figure 19).

4. Remove the carbon deposits from the intake manifold passages.

NOTE: Do not damage the intake manifold sealing surfaces.

5. Using a new EGR Valve gasket from the emissions kit, reinstall the EGR Valve.

6. Scrape the old carburetor base gasket from both the carburetor and the intake manifold.

NOTE: Do not invert the carburetor. This will keep the rollover ball in place in the float bowl.

7. Reinstall the carburetor using the reverse order of the removal procedure. Use the new carburetor gasket from the service kft. Remove the locking clamp pliers from the coolant hose and check all vacuum hose routings and carburetor fastener torques.

Bolt by Sub-EGR Valve:
4.9 - 7.8 N-m (3.6 - 5.8 Ft.lbs.) Carburetor through bolts:
13 - 19 N-m (9.4 - 14 Ft.lbs.)

7. Refill the cooling system and pressure test for leaks.