Toyota Supra 1990 Manual page 159

EMISSION CONTROL SYSTEMS -
Fuel Evaporative Emission Control (EV AP) System
EC-7
/
EC3299
Tank
Pipe
Air
Purge Pipe
i C - '
EC3297
Air
-
EC3298
Cool Water
EC0088
Hot Water
EC0089
INSPECTION OF CHARCOAL CANISTER
1. REMOVE CHARCOAL CANISTER
2. VISUALLY INSPECT CHARCOAL CANISTER CASE
Look for cracks or damage.
3. CHECK FOR CLOGGED FILTER AND STUCK CHECK
VALVE
4.
(a) Using low pressure compressed air, blow into the tank
pipe and check that air flows without resistance from
the other pipes.
(b) Blow into the purge pipe and check that air does not
flow from the other pipes.
If a problem is found, replace the charcoal canister.
CLEAN FILTER IN CANISTER
Clean the filter by blowing 3 kg/cm2(43 psi, 294 kPa)of
compressed air into the tank pipe while holding the other
upper canister pipe closed.
HINT:
• Do not attempt to wash the canister.
• No
activated carbon should come out.
5. INSTALL CHARCOAL CANISTER
INSPECTION OF BVSV
CHECK BVSV BY BLOWING AIR INTO PIPE
(a) Drain the coolant from the radiator into a suitable con-
tainer.
(b) Remove the BVSV.
(c) Cool the BVSV to below 35°C (95°F) with cool water.
(d) Blow air into a pipe and check that the BVSV is closed.
(e) Heat the BVSV to above 54°C (129°F) with hot
water.
(f) Blow air into a pipe and check that the BVSV is open.
If a problem is found, replace the BVSV.
(g) Apply sealant to the threads of the BVSV and reinstall.
Sealant: Part No.08833-00070, THREE BOND 1324
or equivalent
(h)
Fill the radiator with coolant.