Toyota Tundra. Manual — part 1772

Standard ignition timing: 7 to 24° BTDC @ idling (transmission in neutral position and
A/C switch OFF)

8

Disconnect the timing light from the engine

9

Install the air cleaner cap

Fig. 3: Inspecting Ignition Timing During Idling
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

6

INSPECT ENGINE IDLING SPEED

a

Warm up the engine

b

When using the Techstream:

1

Connect the Techstream to the DLC3

2

Enter the following menus:

Select: Powertrain/Engine and ECT/Data List/All Data/Engine Speed

3

Inspect the engine idling speed

Standard idling speed: 650 to 750 rpm (transmission in neutral position and A/C switch
OFF)

c

When not using the Techstream:

1

Using SST, connect terminal 9 (TAC) of the DLC3

SST 09843-18030

2

Race the engine at 2500 rpm for approximately 90 seconds

3

Inspect the engine idling speed

Standard idling speed: 650 to 750 rpm (transmission in neutral position and A/C switch

NOTE:



Turn all the electrical systems OFF.



Perform the inspection when the cooling fan motor is turned OFF.

2009 Toyota Tundra

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

OFF)

Fig. 4: Identifying DLC3 Connector Terminal
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

7

INSPECT COMPRESSION

a

Warm up and stop the engine

b

Remove the 2 bolts, 2 screws and No 1 engine under cover

c

Drain engine coolant (See REPLACEMENT )

d

Remove the front wiper motor and link (see REMOVAL )

e

Remove the front cowl top outer panel (see REMOVAL )

f

Remove the 2 nuts and V-bank cover

g

Loosen the clamp and remove the No 2 air cleaner hose

Fig. 5: Identifying Nuts And V-Bank Cover
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

h

Disconnect the ventilation hose

2009 Toyota Tundra

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

Fig. 6: Identifying No. 2 Ventilation Hose
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

i

Disconnect the MAF connector

j

Using a clip remover, detach the 2 wire harness clamps

k

Disconnect the vacuum hose

Fig. 7: Identifying MAF Meter Connector And Vacuum Hose
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

l

Loosen the hose clamp and remove the 2 bolts and air cleaner with element

m

Remove the intake air surge tank (see REMOVAL )

n

Remove the 6 ignition coils

o

Remove the 6 spark plugs

p

Disconnect the 6 fuel injector connectors

2009 Toyota Tundra

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

Fig. 8: Locating Hose Clamp Bolts And Air Cleaner With Element
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

q

Inspect the cylinder compression pressure

1

Insert SST (compression gauge) into the spark plug hole (Procedure "A")

SST 09992-00500

Fig. 9: Inserting SST (Compression Gauge) Into Spark Plug Hole
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

While cranking the engine, measure the compression pressure (Procedure "B")

Compression pressure: 1300 kPa (13.3 kgf/cm

2

, 189 psi)

Minimum pressure: 1000 kPa (10.2 kgf/cm

2

, 145 psi)

Difference between each cylinder: 100 kPa (1.0 kgf/cm

2

, 15 psi)

HINT:



Use a fully-charged battery so that the engine speed can be increased to 250 rpm or
more



Measure the compression in as short a time as possible

3

Repeat procedures "A" and "B" for each cylinder

4

If the cylinder compression is low, pour a small amount of engine oil into the cylinder

2009 Toyota Tundra

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