Toyota Tundra. Manual — part 1773

through the spark plug hole and repeat procedures "A" and "B" for cylinders with low
compression



If adding oil increases the compression, the piston rings and/or cylinder bore may be
worn or damaged



If pressure stays low, a valve may be stuck or seated improperly, or there may be
leakage from the gasket

r

Connect the 6 injector connectors

s

Install the 6 spark plugs

Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)

t

Install the 6 ignition coils

Torque: 9.0 N*m (92 kgf*cm, 80 in.*lbf)

u

Install the intake air surge tank (see INSTALLATION )

v

Install the air cleaner with element (see INSTALLATION )

w

Install the No 2 air cleaner hose (see INSTALLATION )

x

Install the V-bank cover with the 2 nuts

Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf)

Fig. 10: Identifying V-Bank Cover With Nuts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

y

Install the front cowl top outer panel (see INSTALLATION )

z

Install the wiper motor and link (see INSTALLATION )

aa

Add engine coolant (See REPLACEMENT )

ab

Install the No 1 engine under cover with the 2 bolts and 2 screws

Torque: for bolt

29 N*m (296 kgf*cm, 21 ft.*lbf)

for screw

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

5.4 N*m (55 kgf*cm, 48 in.*lbf)

8

INSPECT CO/HC

HINT:

This check is to determine whether or not the idle CO/HC complies with regulations

a

Start the engine

b

Run the engine at 2500 rpm for approximately 180 seconds

c

Insert the CO/HC meter testing probe at least 40 cm (1 31 ft) into the tailpipe during idling

d

Immediately check the CO/HC concentration during idling and/or at 2500 rpm

Fig. 11: Inserting CO/HC Meter Testing Probe Into Tailpipe
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

HINT:

When carrying out the 2 modes (idling and 2500 rpm) test, the measurement orders are prescribed
by the applicable local regulations

e

If the CO/HC concentration does not comply with regulations, perform troubleshooting in the order
given below

1

Check the A/F sensor operation (see ON-VEHICLE INSPECTION ) and heated oxygen
sensor operation (see ON-VEHICLE INSPECTION )

2

See the table below for possible causes, and then inspect and correct the corresponding
causes if necessary

SYMPTOM TABLE

CO

HC

Symptom

Causes

Normal High Rough idling

1

Faulty ignition:



Incorrect timing



Plugs are contaminated or shorted, or
plug gaps are defective

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

DRIVE BELT

COMPONENTS

2

Incorrect valve clearance

3

Leaky intake and exhaust valves

4

Leaky cylinders

Low High

Rough idling (Fluctuating
HC reading)

1

Vacuum leaks:



Ventilation hoses



Intake manifold



Throttle body

2

Lean mixture causing misfire

High High

Rough idle (Black smoke
from exhaust)

1

Restricted air filter

2

Faulty SFI system:



Faulty pressure regulator



Defective engine coolant temperature sensor



Faulty mass air flow meter



Faulty ECM



Faulty injectors



Faulty throttle position sensor

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra

Fig. 12: Identifying Drive Belt Replacement Components With Torque Specifications
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

ON-VEHICLE INSPECTION

1

CHECK FAN AND GENERATOR V BELT

a

Visually check the fan and generator V belt for excessive wear, frayed cords, etc

If any defect has been found, replace the fan and generator V belt

2009 Toyota Tundra

2009 ENGINE Engine Mechanical (1GR-FE) - Tundra