Section 4 Fuel Emission Control SystemOn-board Inspection1. Check the operation when disconnecting the fuel supply.
(1) Warm the engine up to 2,500r/min at least, and check the noise of the injector with a sound level meter
(see Figure 3-9).
(2) When the throttle releases, the noise from the injector should stop immediately; repeat several times.
2. Check the fuel vapor discharge control system (see Figure 3-10).
(1) After starting the engine, disconnect the vacuum pipe.
(2) Make sure that there is vacuum present at the canister control valve (TEV) port when selecting ”ACTIVE
TEST" and "PURGE TEV" based on the display on the fault diagnosis instrument.
(3) After "ACTIVE TEST", connect the vacuum pipe.
(4) Carry out "ECM DATA MONITOR" on the fault diagnosis instrument, and then select "PURGE TEV"
for operation inspection.
(5) Start up the car after the engine warms up, and make sure the TEV ON from OFF (see Figure 3-11).
3. Check whether there is any distortion or damage on the filling cap and the washer (see Figure 3-12).Figure 3-9 Figure 3-10Fuel SystemFuel Emission Control System3-18Figure 3-11 Figure 3-12Sound level meter
Gasket -
