Toyota Supra 1990 Manual page 24

MA-S
MAINTENANCE - Maintenance Operations
B
..
Air should flow through freely and
no charcoal should come out.
EC3298
MA0379
S. INSPECT CHARCOAL CANISTER
(a) Disconnect the hoses from the charcoal canister. Label
the hoses for correct reinstallation.
(b) Plug pipe
A
with your finger and blow compressed air
(3 kg/cm2, 43 psi or 294 kPa) through pipe B (fuel
tank side).
• Check that air comes out of the bottom pipe C
without resistance .
• Check that no activated charcoal comes out.
If necessary, replace the charcoal canister.
HINT: Do not attempt to wash the charcoal.
(c) Connect the hoses to the charcoal canister.
9.
REPLACE GASKET IN FUEL TANK CAP
(a) Remove the old gasket (O-ring) from the tank cap. Do
not damage the cap.
(b) Install the new gasket by hand.
(c) Inspect the cap for damage or cracks.
(d) Install the cap and check the torque limiter.
10.
INSPECT FUEL LINES AND CONNECTIONS
Visually inspect the fuel lines for cracks, leakage, loose con-
nections, deformation or tank band looseness.
11.
INSPECT EXHAUST PIPES AND MOUNTINGS
Visually inspect the pipes, hangers, and connections for
severe corrosion, leaks or damage.
12.
ADJUST VALVE CLEARANCE
HINT: Check and adjust the valve clearance while the en-
gine is cold.
(a) Remove the cylinder head covers.
(b) Measure and adjust valve clearance.
(See page EM-7)
Valve clearance (cold):
Intake
0.15 - 0.25
mm
(0.006 - 0.010
in.)
Exhaust
0.20 - 0.30
mm (O.OOS -
0.012
in.)
(c) Reinstall the cylinder head covers.