Toyota 4-Runner 1985 Repair Manual page 162

EC-62
Acceleration
Nozzle
EMISSION CONTROL SYSTEMS (CARB.) -
Auxiliary Systems
AAP
EC039:>
BVSV
AAP
EC1065
INSPECTION OF AAP SYSTEM
1.
CHECK SYSTEM WITH COLD ENGINE
(a) Check that the coolant temperature is below 55
u
C
(131°F).
(b) Remove the air cleaner.
A03080
(c) Start the engine.
(d) Pinch the AAP hose, and stop the engine.
(e) Release the hose.
(f) Check that gasoline ?purts out from the acceleration
nozzle.
2. REPEAT
(c),
(d) AND
(e)
ABOVE AFTER WARM-UP
(a) Check that gasoline does not spurt out from the ac-
celeration nozzle.
(b) Reinstall the air cleaner.
IF NO PROBLEM IS FOUND WITH THIS INSPECTION, THE
SYSTEM IS OKAY, OTHERWISE INSPECT EACH PART
INSPECTION OF AAP DIAPHRAGM
CHECK DIAPHRAGM OPERATION AT IDLE
(a) Start the engine.
(b) Disconnect the vacuum hose from the AAP.
(c) Apply and release vacuum to the diaphragm at idle.
(d) Check that the engine rpm changes by releasing
vacuum.
(e)
Reconnect the AAP hose.
If a problem is found, replace the diaphragm.
INSPECTION OF BVSV
(See page EC-60)