Page 285 of 2053

GENERAL ENGINE INFORMATION 1A2 -- 13
D AEW OO M Y_2000
GENERAL INFORMATION
CLEANLINESS AND CARE
An automobile engine is a combination of many ma-
chined, honed, polished and lapped surfaces with toler-
ances that are measured in the ten-thousandths of an
inch. When any internal engine parts are serviced, care
and cleanliness are important. A liberal coating of enigne
oil should be applied to friction areas during assembly, to
protect and lubricate the surfaces on initial operation.
Proper cleaning and protection of machined surfaces and
friction areas is part of the repair procedure. This is con-
sidered standard shop practice even if not specifically
stated.
Whenever valve train components are removed for ser-
vice, they should be kept in order. They should be
installed in the same locations, and with the same mating
surfaces, as when they were removed.
Battery cables should be disconnected before any major
work is performed on the engine. Failure to disconnect
cables may result in damage to wire harness or other
electrical parts.
ON-ENGINE SERVICE
Caution: Disconnect the negative battery cable be -
fore removing or installing any electrical unit, or
when a tool or equipment could easily come in con-
tact with exposed electrical terminals. Disconnect -
ing this cable will help prevent personal injury and
damage to the vehicle. The ignition must also be in
LOCK unless otherwise noted.
Notice:Any time the air cleaner is removed, the intake
opening should be covered. Thiswill protect against ac-
cidental entrance of foreign material, which could follow
the intake passage into the cylinder and cause exten-
sive damage when the engine is started.
Page 286 of 2053

1A2 -- 2 GENERAL ENGINE INFORMATION
D AEW OO M Y_2000
SPECIFICATIONS
ENGINE SPECIFICATIONS
ApplicationE23 EngineE20 Engine
Engine ModelM161.970M161.940
Displacement (CC)22951998
Cylinder (Bore x Stroke)(mm)90.9 x 88.489.9 x 78.7
Fuel Injection / Ignition SystemMSE 3.53S←
Compression Ratio10.4:19.6:1
Number of Cylinders4←
Camshaft Valve ArrangementDOHC←
Camshaft Drive TypeChain-- Driven←
Max. Output (ps/rpm)149 / 5500135 / 5500
Max. Torque (kgSm/rpm)22.4 / 400019.3 / 4000
Firing Order1--3--4--2←
Ignition TypeDistributorless←
Ignition TimingBTDC 6°±2°←
Va lv e
Tii
IntakeOpen/CloseATDC 19.25°/ ABDC 28.76°ATDC 13.15°/ ABDC 13.57°
Tim in gExhaustOpen/CloseBBDC 20.62°/ BTDC 15.08°BBDC 16.58°/ BTDC 17.05°
Valve Clearance AdjustmentAutomatic Control←
Idle Speed (rpm)750±50←
Fuel Injection Pressure (kg/cm@)3.2 -- 4.2←
Oil Capacity (liter)7.5←
Lubrication TypeForced by Gear Pump←
Oil Filter TypeFull Flow with Paper Filter←
FuelUnleaded Gasoline←
MSE 3.62S/3.53S (Motorsteuer Elektronik : German)
MSE : Engine Control Electronic
3.62S : 6 cylinder version
3.53S : 4 cylinder version
Page 287 of 2053
GENERAL ENGINE INFORMATION 1A2 -- 3
D AEW OO M Y_2000
COMPONENT LOCATOR
FRONT VIEW
1 HFM Sensor
2 Intake Air Duct
3 Cylinder Head Cover
4 Ignition Coil
5 Spark Plug Connector
6 Fuel Distributor
7 Injector
8 Exhaust Camshaft
9 Intake Camshaft
10 Valve Tappet
11 Intake Valve12 Intake Manifold
13 Cylinder Head
14 Exhaust Manifold
15 Dipstick Guide Tube and Gauge
16 Connecting Rod
17 Crankshaft
18 Engine Mounting Bracket
19 Starter
20 Crankcase
21 Oil Pump Sprocket
22 Oil Pan
Page 294 of 2053

D AEW OO M Y_2000
SECTION 1B2
M161 ENGINE MECHANICAL
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless other -
wise noted.
TABLE OF CONTENTS
Specifications 1B2 -- 2............................
Fastener Tightening Specifications 1B2 -- 2..........
Special Tools 1B2 -- 4.............................
Special Tools Table 1B2-- 4.......................
Maintenance and Repair 1B2 -- 7...................
On-- Vehicle Service 1B2-- 7.........................
Engine Assembly 1B2-- 7.........................
Crankcase Ventilation System 1B2-- 14.............
Generator 1B2-- 18..............................
Engine Mount 1B2-- 19...........................
Poly V-- Belt 1B2 -- 20.............................
Tensioning Device 1B2-- 22.......................
Tensioning Device Shock Absorber 1B2-- 23........
Poly V-- Belt Inspection 1B2-- 24...................
Cylinder Head Cover 1B2-- 26.....................
Cylinder Head Front Cover 1B2 -- 28...............
Cylinder Head 1B2-- 30...........................
Timing Gear Case Cover 1B2-- 34.................
Crankshaft Sealing Rear Cover 1B2-- 37...........
Belt Pulley and Vibration Damper 1B2-- 39..........
Crankshaft Front Radial Seal 1B2-- 42.............
Crankshaft Rear Radial Seal 1B2-- 44..............
Crankshaft 1B2-- 45.............................
Flywheel / Driven Plate 1B2 -- 51...................
Camshaft Adjuster 1B2-- 54.......................Camshaft Sprocket Bolt 1B2-- 57..................
Camshaft 1B2-- 58..............................
Camshaft Timing Position 1B2 -- 61................
Valve Spring 1B2 -- 63............................
Valve Stem Seal 1B2-- 67........................
Chain Tensioner 1B2-- 68.........................
Timing Chain 1B2-- 72............................
Tensioning Rail 1B2-- 77..........................
Cylinder Head Guide Rail 1B2-- 78.................
Crankcase Guide Rail 1B2-- 80....................
Crankshaft Sprocket 1B2-- 81.....................
Piston 1B2-- 83..................................
Connecting Rod 1B2-- 86.........................
Piston Ring 1B2 -- 88.............................
Oil Pan 1B2-- 90.................................
Engine Oil and Oil Filter Element 1B2-- 92..........
Oil Pump 1B2-- 95...............................
Oil Pressure Relief Valve 1B2-- 97.................
Oil Non-Return Valve 1B2-- 98....................
Oil Dipstick Guide Tube 1B2-- 99..................
Unit Repair 1B2 -- 100............................
Core Plugs in Crankcase 1B2-- 100................
Cylinder Bore 1B2-- 102..........................
Crankcase Mating Surface 1B2-- 104..............
Cylinder Head Mating Surface 1B2-- 106...........
Page 304 of 2053
M161 ENGINE MECHANICAL 1B2 -- 11
D AEW OO M Y_2000
15. Disconnect the terminals from starter motor and re-
move the starter motor.
16. Disconnect the engine main harness ground.
17. Disconnect the engine ground wire.
18. Disconnect following sensors connector.
DHFM sensor.
DCoolant temperature sensor.
DKnock sensor.
DCamshaft and crankshaft sensors.
19. After removing the ignition coil cover, disconnect the
ignition coil connector.
20. Remove the harness cover and disconnect the 4 in-
jection valve connectors. Disconnect the main har-
ness.
Page 320 of 2053
M161 ENGINE MECHANICAL 1B2 -- 27
D AEW OO M Y_2000
Removal & Installation Procedure
1. Remove the intake air duct.
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
2. Remove the spark plug cover.
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
Notice:Release 3 screws from the spark plug cover and
remove the cover for M161 Engine coil.
3. Remove the spark plug connector and ignition cable.
4. Unscrew the bolts (3) and remove the head cover and
the gasket.
Installation Notice
Tightening Torque
9--11NSm (80 -- 97 lb-in)
Notice:Replace the gasket with a new one if necessary.
5. Installation should follow the removal procedure in
the reverse order.
6. Check for oil leaks by operating the engine.
Page 396 of 2053

D AEW OO M Y_2000
SECTION 1D2
M161 ENGINE COOLING
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless other -
wise noted.
TABLE OF CONTENTS
Specifications 1D2 -- 2............................
General Specifications 1D2-- 2....................
Fastener Tightening Specifications 1D2 -- 2..........
Special Tools 1D2 -- 3.............................
Special Tools Table 1D2-- 3.......................
Diagnosis 1D2 -- 4.................................
System Leakage Test 1D2-- 4.....................
Maintenance and Repair 1D2 -- 5...................
On-- Vehicle Service 1D2-- 5.........................Coolant Drain and Fill Up 1D2 -- 5..................
Cooling Fan and Viscous Clutch 1D2 -- 7............
Wat er Pum p 1D2 -- 9.............................
Thermostat 1D2 -- 11.............................
Thermostat Housing Assembly 1D2 -- 12............
Removal and Installation of Cooling
Fan Shroud 1D2 -- 14...........................
Removal and Installation of Radiator 1D2-- 15.......
Page 412 of 2053

D AEW OO M Y_2000
SECTION 1E2
M161 ENGINE ELECTRICAL
CAUTION: Disconnect the negative battery cable before removing or installing any electrical unit or when a
tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable
will help prevent personal injury and damage to the vehicle. The ignition must also be in LOCK unless other -
wise noted.
TABLE OF CONTENTS
Specifications 1E2 -- 2............................
Generator Specifications 1E2-- 2..................
Starting Motor Specifications 1E2-- 2...............
Battery Specifications 1E2-- 2.....................
Fastener Tightening Specifications 1E2 -- 2..........
Maintenance and Repair 1E2 -- 3...................
On-- Vehicle Service 1E2-- 3.........................Generator 1E2-- 3...............................
Starting Motor 1E2--4...........................
Battery 1E2--5.................................
Spark Plug 1E2 -- 6..............................
Ignition Cable 1E2-- 8............................
Unit Repair 1E2 -- 11..............................
Battery 1E2--11................................