Lexus GS300/400 (2000 year). Service manual - part 135

EM–4

–

ENGINE MECHANICAL (2JZ–GE)

COMPRESSION

1358

7.

RECONNECT INJECTOR CONNECTORS

HINT:
The Nos.1, 3, 5 injector connectors and dark gray, and the
Nos.2, 4, 6 injector connectors are brown.
8.

REINSTALL SPARK PLUGS

9.

RECONNECT IGNITION COILS AND HIGH–TENSION
CORD SET ASSEMBLY (See page 

IG–9

)

10.

INSTALL ENGINE COVER

Install the engine cover with the 4 nuts.

EM0DA–03

A02823

A02802

B01935

Wire
Grommet

Clamp

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

EM–33

1387

REMOVAL

1.

REMOVE ENGINE UNDER COVER

2.

DRAIN ENGINE COOLANT

3.

DISCONNECT UPPER RADIATOR HOSE FROM WA-
TER OUTLET

4.

REMOVE ENGINE COVER

Remove the 4 nuts and engine cover.
5.

REMOVE AIR CLEANER INLET

6.

REMOVE AIR CLEANER, MAF METER AND INTAKE
AIR RESONATOR ASSEMBLY (See page 

EM–62

)

7.

REMOVE DRIVE BELT (See page 

CH–1

)

8.

DISCONNECT PS PUMP WITHOUT DISCONNECTING
HOSES

(a)

Disconnect the PS air hose from the No.4 timing belt cov-
er.

(b)

Disconnect the PS air hose from the air intake chamber.

(c)

Remove the 2 bolts and pump rear stay.

(d)

Remove the 2 bolts, and disconnect the vane pump from
the pump bracket.

HINT:
Put aside the vane pump, and suspend it.

9.

DISCONNECT FRONT EXHAUST PIPE FROM EX-
HAUST MANIFOLD

(a)

Disconnect the wire grommet and sensor wire of the
heated oxygen sensor (bank 2 sensor 2) from the hole
and clamp on the floor.

A02819

A09752

A02735

EM–34

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

1388

(b)

Remove the 3 bolts and nuts holding the front exhaust
pipe to the exhaust manifold.

(c)

Remove the 2 bolts and pipe support bracket.

(d)

Disconnect the front exhaust pipe from the exhaust man-
ifold, and remove the 2 gaskets.

10.

REMOVE EXHAUST MANIFOLD

(a)

Disconnect the 3 heated oxygen sensor connectors and
clamp.

(b)

Remove the clamp and case clamp.

(c)

Using a 14 mm deep socket wrench, remove the 8 nuts,
exhaust manifold and 2 gaskets.

11.

REMOVE WATER BYPASS OUTLET AND NO.1
WATER BYPASS PIPE (See page 

CO–11

)

12.

REMOVE THROTTLE BODY AND INTAKE AIR
CONNECTOR ASSEMBLY (See page 

EM–5

)

13.

REMOVE OIL DIPSTICK AND GUIDE FOR ENGINE
(See page 

LU–6

)

14.

REMOVE OIL DIPSTICK AND GUIDE FOR A/T
 (See page 

EM–62

)

15.

REMOVE AIR INTAKE CHAMBER (See page 

SF–46

)

16.

REMOVE VACUUM CONTROL VALVE SET AND NO.2
VACUUM PIPE

(a)

Disconnect the VSV connector for the ACIS.

(b)

Remove the 3 nuts, vacuum control valve set and No.2
vacuum pipe.

(c)

Disconnect the engine wire clamp from the clamp bracket
of the No.2 vacuum pipe.

17.

REMOVE NO.3 TIMING BELT COVER

18.

REMOVE IGNITION COILS AND HIGH–TENSION
CORD SET ASSEMBLY (See page 

IG–7

)

19.

REMOVE SPARK PLUGS

A02732

(a)

(b)

(c)

(d)

(d)

(c)

(b)

A02811

A02733

Clamp Bracket

A11123

5 mm
Hexagon
Wrench

–

ENGINE MECHANICAL (2JZ–GE)

CYLINDER HEAD

EM–35

1389

20.

DISCONNECT ENGINE WIRE FROM CYLINDER HEAD

(a)

Disconnect the ground strap from the cylinder head.

(b)

Disconnect the 2 water bypass hoses from the hose
clamps on the cylinder head and oil filter bracket.

(c)

Remove the 2 bolts and hose clamps.

(d)

Disconnect the heated oxygen sensor (bank 2 sensor 1)
connector and engine wire clamp from the hose clamps.

(e)

Disconnect the heated oxygen sensor (bank 1 sensor 1)
connector.

(f)

Disconnect the crankshaft position sensor connector.

(g)

Disconnect the generator connector.

(h)

Remove the bolt and clamp bracket, and disconnect the
engine wire from the water pump.

(i)

Disconnect the 2 ground terminals from the intake man-
ifold.

(j)

Disconnect the 2 engine wire clamps from the No.1 oil
pipe and clamp bracket on the intake manifold.

(k)

Remove the bolt and clamp bracket.

(l)

Disconnect the ECT sensor connector.

(m)

Remove the 2 knock sensor connectors.

(n)

Remove the oil pressure switch connector.

(o)

Remove the oil level sensor connector.

(p)

Remove the starter connector.

(q)

Remove the 6 injector connectors.

(r)

Remove the camshaft timing oil control valve connector.

(s)

Remove the camshaft position sensor connector.

(t)

Using a 5 mm hexagon wrench, remove the bolt holding
the engine wire protector to the No.2 cylinder head cover.

(u)

Remove the 3 nuts, and disconnect the engine wire pro-
tector from the intake manifold.

21.

REMOVE FUEL PRESSURE PULSATION DAMPER
(See page 

SF–26

)