Emission Control Systems: Service and Repair

Fig. 119 Connecting vacuum hose assembly for air cleaner, altitude compensator & TVV:

1. Remove air cleaner.
2. Remove blind caps attached to altitude compensation pipes and outer vent pipe of carburetor.
3. Remove air duct and canister from car and install new high altitude canister.
4. Connect hoses for fuel tank vapor vent line and vacuum signal line.
5. Cut off canister purge hose at canister side, leaving approximately 4 inches. Insert 3-way connector with vacuum hose and connect vacuum hose to canister outer vent pipe.
6. Remove installed bands, then clamp hoses with removed bands.
7. Connect outer vent hose to carburetor, making sure identification mark on hose is connected at carburetor, leading it along the canister purge hose, then clamp outer vent hose as purge hose is clamped.
8. Remove vacuum switch and bracket and install altitude compensator with new bracket.
9. Reinstall vacuum switch and make sure harness connector and vacuum hose are securely connected.
10. Connect vacuum hoses between carburetor and altitude compensator and secure with clamps and hose bands.
11. Remove air hose between air cleaner and TVV and connect a vacuum hose assembly between air cleaner, altitude compensator and TVV, Fig. 119.
12. Reinstall air cleaner and check that hoses are correctly connected and do not interfere with other components.
13. Start engine and check air and vacuum lines for leaks.
14. If there are no leaks, start engine and run it until it reaches operating temperature, then check idle speed and adjust as necessary.