Evaporative Emission (Evap) Control System; Inspection Of Fuel Vapor Lines, Fuel Tank And Tank Cap; Visually Inspect Lines And Connections; Visually Inspect Fuel Tank - Toyota 22R-E Service Manual

EG1–86
To reduce HC emission, evaporated fuel from the fuel tank is routed through the charcoal canister to the throttle body
for combustion in the cylinders.
Throttle Valve
Opening
Positioned below
CLOSED
purge port
Positioned above
purge port
High pressure
in tank
High vacuum
in tank
EVAPORATIVE EMISSION (EVAP)
CONTROL SYSTEM
Check Valve in
Charcoal Canister
OPEN
OPEN
CLOSED
INSPECTION OF FUEL VAPOR LINES,FUEL
TANK AND TANK CAP

1. VISUALLY INSPECT LINES AND CONNECTIONS

Look for loose connections,sharp bends or damage.

2. VISUALLY INSPECT FUEL TANK

Look for deformation,cracks or fuel leakage.
ENGINE – EMISSION CONTROL SYSTEMS
Check Valve
in Fuel Tank Cap
CLOSED
CLOSED
OPEN OPEN
Evaporated Fuel (HC)
HC from tank is absorbed
in the canister.
HC from canister is led
into throttle body.
HC from tank is absorbed
in the canister.
(Air is led into the tank.)