Mitsubishi Galant 9G. Manual - part 1380

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-14

1. Check engine oil and add or change oil if required.

NOTE: If the engine oil level is low, air is sucked from the oil 
screen, causing air to enter the oil passage.
NOTE: If the engine oil level is higher than specification, oil 
may be stirred by the crankshaft, causing oil to be mixed 
with a large quantity of air.
NOTE: If oil is deteriorated, air is not easily separated from 
oil, increasing the quantity of air contained in oil.

NOTE: If air mixed with oil enters the high pressure chamber 
inside the lash adjuster from the above causes, air in the 
high pressure chamber is compressed excessively while the 
valve is opened, resulting in an abnormal noise when the 
valve closes. This is the same phenomenon as that 
observed when the valve clearance has become excessive. 
The lash adjuster can resume normal function when air 
entered the lash adjuster is removed.

2. Idle the engine for one to three minutes to warm it up.
3. Repeat the operation pattern, shown in left figure, at no load 

to check for abnormal noise. (Usually the abnormal noise is 
eliminated after repetition of the operation 10 to 30 times. If, 
however, no change is observed in the level of abnormal 
noise after repeating the operation more than 30 times, 
suspect that the abnormal noise is due to some other 
factors.)

4. After elimination of abnormal noise, repeat the operation 

shown in left figure five more times.

5. Run the engine at idle for one to three minutes to make sure 

that the abnormal noise has been eliminated.

AKX00328

GOOD

MINIMUM

MAXIMUM

AB

AKX00329

HIGH-
PRESSURE
CHAMBER

AB

AKX00330

OPEN THROTTLE
VALVE GRADUALLY

CLOSE
THROTTLE VALVE

APPROXI-
MATELY
3,000 r/min

IDLING
OPERATION

ONCE

15 s

15 s

AIR BLEEDING OPERATION PATTERN

AB

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-15

CYLINDER BLOCK HEATER UNIT  CHECK

M1111004800034

1. Remove the cylinder block heater cover. (Refer to 

P.11C-54

).

2. Disconnect cylinder block heater unit connector, and 

measure the resistance at cylinder block heater unit.

Standard value: 19 

− 30 Ω

3. If not within the standard value, replace the cylinder block 

heater unit. (Refer to 

P.11C-54

).

AC307040AB

ENGINE ASSEMBLY

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-16

ENGINE ASSEMBLY

REMOVAL AND INSTALLATION

M1112001000894

CAUTION

*: indicates parts which should be temporarily tightened, and then fully tightened with the engine 
weight applied on the vehicle body.

Pre-removal Operation
• Under Cover Removal (Refer to GROUP 51, Under Cover 

P.51-11

.) 

• Fuel Line Pressure Reduction [Refer to GROUP 13B, 

On-vehicle Service 

− Fuel Pump Relay Disconnection 

(How to Reduce Pressurized Fuel Lines) 

P.13B-1181

.]

• Engine Coolant Draining (Refer to GROUP 14, On-vehicle 

Service 

− Engine Coolant Replacement 

P.14-7

.)

• Engine Oil Draining (Refer to GROUP 12, On-vehicle Ser-

vice 

− Engine Oil Replacement 

P.12-3

.)

• Hood Removal (Refer to GROUP 42, Hood 

P.42-8

.)

• Powertrain Control Module (PCM) Removal (Refer to 

GROUP 13B, Powertrain Control Module (PCM) 

P.13B-1192

.)

• Air Cleaner Removal (Refer to GROUP 15, Air Cleaner 

P.15-4

.)

• Front Exhaust Pipe Removal (Refer to GROUP 15, 

Exhaust Pipe and Main Muffler 

P.15-20

.)

• Strut Tower Bar Removal (Refer to GROUP 42, Strut 

Tower Bar 

P.42-12

.)

• Battery and Battery Tray Removal

• Radiator Grille Removal (Refer to GROUP 51, Radiator 

Grille 

P.51-5

.)

Post-installation Operation
• Right Bank Exhaust Manifold Installation (Refer to 

GROUP 15, Exhaust Manifold 

P.15-16

.)

• Radiator Grille Installation (Refer to GROUP 51, Radiator 

Grille 

P.51-5

.)

• Battery and Battery Tray Installation

• Strut Tower Bar Installation (Refer to GROUP 42, Strut 

Tower Bar 

P.42-12

.)

• Air Cleaner Installation (Refer to GROUP 15, Air Cleaner 

P.15-4

.)

• Front Exhaust Pipe Installation (Refer to GROUP 15, 

Exhaust Pipe and Main Muffler 

P.15-20

.)

• Powertrain Control Module (PCM) Installation (Refer to 

GROUP 13B, Powertrain Control Module (PCM) 

P.13B-1192

.)

• Hood Installation (Refer to GROUP 42, Hood 

P.42-8

.)

• Drive Belt Tension Check (Refer to 

P.11C-8

.)

• Engine Oil Refilling (Refer to GROUP 12, On-vehicle Ser-

vice 

− Engine Oil Replacement 

P.12-3

.)

• Engine Coolant Refilling (Refer to GROUP 14, On-vehicle 

Service 

− Engine Coolant Replacement 

P.14-7

.)

• Fuel Leak Check

• Under Cover Installation (Refer to GROUP 51, Under 

Cover 

P.51-11

.) 

ENGINE ASSEMBLY

TSB Revision

ENGINE MECHANICAL <3.8L ENGINE>

11C-17

AC306782

3.0 ± 0.5 N·m
27 ± 4 in-lb

9.0 ± 2.0 N·m
80 ± 17 in-lb

9.0 ± 2.0 N·m
80 ± 17 in-lb

1

2

3

4

5

6

AB

(ENGINE OIL)

REMOVAL STEPS

1.

ENGINE COVER

2.

CONTROL WIRING HARNESS 
CONNECTION

3.

VACUUM HOSE CONNECTION

4.

PURGE HOSE CONNECTION

<<A>> >>C<<

5.

FUEL HIGH-PRESSURE HOSE 
CONNECTION

6.

HEATER HOSE CONNECTION

•

DRIVE SHAFT (REFER TO 
GROUP 26,  DRIVE SHAFT 
ASSEMBLY 

P.26-13

.) 

<<B>>

•

EXHAUST MANIFOLD (RH) 
(REFER TO GROUP 15, 
EXHAUST MANIFOLD 

P.15-16

.) 

REMOVAL STEPS (Continued)