Evaporative Emission Control System (Models with catalyzer) - Description (Cont'd) / Inspection

EF & EC-196prose procedure

Description (Cont'd)

purge control valve opens and the vapor is sucked into the intake manifold through both the main purge orifice and the constant purge orifice.

Refer to MA section for inspection of fuel tank and vapor vent line.

The thermal vacuum valve is used with the ignition control system. Refer to page EF & EC-185.

1
Disconnect rubber hose in the line between T-connector and carbon canister, at T-connector (hose (a)).
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2
With engine running, suck air from the opening of the rubber hose (a), and make sure that there is no leak. Also, when sucking, engine rpm should increase. If N.G., replace canister.
3
Disconnect rubber hose (c), leading to carburetor float chamber.
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4
With engine running blow air through rubber hose (c), and make sure that there is no leak.
5
With engine off make sure there is a leak. If N.G., replace canister.
6
Disconnect rubber hose (b), leading to intake manifold.
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7
Blow or suck air to or from the opening of rubber hose (b), and make sure that there is no leak. If N.G., replace canister.