Lexus SC300 / Lexus SC400. Service manual — part 610

REMOVAL OF FUEL PRESSURE
PULSATION DAMPER

(See Component on page

FI–58

)

1.

DISCONNECT CABLE FROM NEGATIVE TERMINAL OF
BATTERY
CAUTION: Work must be started after approx. 20 se-
conds or longer from the time the ignition switch is
turned to the ”LOCK” position and the negative (–) termi-
nal cable is disconnected from the battery.

2.

REMOVE UPPER HIGH–TENSION CORD COVER
(a) Remove the two mounting bolts.
(b) Disconnect the front side claw groove of the cord cover

from the claw of the lower cover, and remove the cord
cover.

3.

REMOVE LH ENGINE WIRE COVER
Remove the two bolts and engine wire cover.

4.

REMOVE FUEL PRESSURE PULSATION DAMPER
(a) Remove the pulsation damper and upper gasket.
(b) Disconnect the fuel inlet hose from the delivery pipe,

and remove the lower gasket.

FI–59

EFI SYSTEM – Fuel System (Fuel Pressure Pulsation Damper)

INSTALLATION OF FUEL PRESSURE
PULSATION DAMPER

(See Components on page

FI–58

)

1.

INSTALL FUEL PRESSURE PULSATION DAMPER
Using SST, install two new gaskets, the inlet hose and pulsa-
tion damper.
SST 09612–24014 (09617–24011)

Torque: 39 N

⋅

m (400 kgf

⋅

cm, 29 ft

⋅

lbf)

33 N

⋅

m (340 kgf

⋅

cm, 24 ft

⋅

lbf) for SST

HINT: Use a torque wrench with a fulcrum length of 30 cm
(11.81 in.)

2.

INSTALL LH ENGINE WIRE COVER
(a) Connect portions A and B engine wire cover to the wire

brackets.

(b) Set the VSV (for fuel pressure control system) wire in

original position.

(c) Fit portions C and D of the engine wire cover, matching

them with the lower high–tension cord cover and No.3
timing belt cover.

(d) Install the engine wire cover with the two bolts.

3.

INSTALL UPPER HIGH–TENSION CORD COVER
(a) Fit portion A of the upper high–tension cover, matching

it with the top of the lower high–tension cord cover.

(b) Push the front side of the high–tension cord cover, and

connect the front side claw groove of the upper
high–tension cord cover to the claw of the lower
high–tension cord cover.

(c) Install the upper high–tension cord cover with the two

bolts.

4. CONNECT CABLE TO NEGATIVE TERMINAL OF

BATTERY

5.

CHECK FOR FUEL LEAKS (See page

FI–16

)

FI–60

EFI SYSTEM – Fuel System (Fuel Pressure Pulsation Damper)

Fuel Tank and Lines

COMPONENTS

FI–61

– Fuel System (Fuel Tank and Lines)

EFI SYSTEM

PRECAUTIONS

1.

Always use new gaskets when replacing the fuel tank or
component part.

2.

Apply the proper torque to all parts tightened.

INSPECTION OF FUEL LINES AND
CONNECTIONS

(a) Inspect the fuel lines and connections for cracks,

leakage or deformation.

(b) Inspect the fuel tank vapor vent system hoses and

connections for looseness, kinks or damage.

(c) Inspect the fuel tank for deformation, cracks, fuel

leakage or tank band looseness.

(d) Check the filter neck for damage or fuel leakage.

(e) Hose and tube connections are as shown in the

illustration.

If a problem is found, repair or replace the parts as necessary.

FI–62

EFI SYSTEM – Fuel System (Fuel Tank and Lines)