Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Dodge Dakota 2000-2001.2003.2005 Approved Dodge Dakota 2000 00AN_9
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AN ENGINE 9-1
ENGINE
TABLE OF CONTENTS
page page
2.5L ENGINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4.7L ENGINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
3.9L ENGINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 5.9L ENGINE. . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
2.5L ENGINE
TABLE OF CONTENTS
page page
DESCRIPTION AND OPERATION ENGINE REAR SUPPORT . . . . . . . . . . . . . . . . . . 29
ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
LUBRICATION SYSTEM. . . . . . . . . . . . . . . . . . . . . 2 INTAKE MANIFOLD . . . . . . . . . . . . . . . . . . . . . . . 31
EXHAUST MANIFOLD . . . . . . . . . . . . . . . . . . . . . . 3 EXHAUST MANIFOLD . . . . . . . . . . . . . . . . . . . . . 33
INTAKE MANIFOLD . . . . . . . . . . . . . . . . . . . . . . . . 3 CYLINDER HEAD COVER . . . . . . . . . . . . . . . . . . 33
CYLINDER HEAD. . . . . . . . . . . . . . . . . . . . . . . . . . 3 ROCKER ARMS AND PUSH RODS . . . . . . . . . . . 34
CRANKSHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 VALVE SPRING AND SEAL . . . . . . . . . . . . . . . . . 35
CRANKSHAFT MAIN BEARINGS . . . . . . . . . . . . . . 5 CYLINDER HEAD. . . . . . . . . . . . . . . . . . . . . . . . . 36
CRANKSHAFT OIL SEALS . . . . . . . . . . . . . . . . . . . 5 HYDRAULIC TAPPETS. . . . . . . . . . . . . . . . . . . . . 38
DIAGNOSIS AND TESTING VIBRATION DAMPER . . . . . . . . . . . . . . . . . . . . . . 39
ENGINE DIAGNOSIS--INTRODUCTION. . . . . . . . . 6 TIMING CASE COVER OIL SEAL . . . . . . . . . . . . . 39
SERVICE DIAGNOSIS--PERFORMANCE . . . . . . . 6 TIMING CASE COVER . . . . . . . . . . . . . . . . . . . . . 40
SERVICE DIAGNOSIS--MECHANICAL . . . . . . . . . 8 TIMING CHAIN AND SPROCKETS . . . . . . . . . . . . 40
SERVICE DIAGNOSIS--LUBRICATION . . . . . . . . . 9 CAMSHAFT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
INTAKE MANIFOLD LEAKAGE DIAGNOSIS . . . . . . 9 CAMSHAFT PIN REPLACEMENT . . . . . . . . . . . . . 43
CYLINDER COMPRESSION PRESSURE TEST . . . 9 CAMSHAFT BEARINGS . . . . . . . . . . . . . . . . . . . . 45
CYLINDER HEAD GASKET FAILURE CRANKSHAFT MAIN BEARINGS . . . . . . . . . . . . . 45
DIAGNOSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 OIL PAN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
CYLINDER COMBUSTION PRESSURE OIL PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
LEAKAGE TEST . . . . . . . . . . . . . . . . . . . . . . . . 10 PISTON AND CONNECTING ROD . . . . . . . . . . . . 49
ENGINE OIL LEAK INSPECTION . . . . . . . . . . . . . 11 REAR MAIN OIL SEAL . . . . . . . . . . . . . . . . . . . . . 50
REAR SEAL AREA LEAKS--INSPECTION . . . . . . 12 DISASSEMBLY AND ASSEMBLY
HYDRAULIC TAPPETS. . . . . . . . . . . . . . . . . . . . . 12 CYLINDER HEAD. . . . . . . . . . . . . . . . . . . . . . . . . 51
ENGINE OIL PRESSURE . . . . . . . . . . . . . . . . . . . 13 CLEANING AND INSPECTION
SERVICE PROCEDURES ROCKER ARMS AND PUSH RODS . . . . . . . . . . . 51
FORM-IN-PLACE GASKETS. . . . . . . . . . . . . . . . . 14 HYDRAULIC TAPPETS. . . . . . . . . . . . . . . . . . . . . 51
ENGINE OIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 ENGINE CYLINDER HEAD. . . . . . . . . . . . . . . . . . 52
REPAIR DAMAGED OR WORN THREADS . . . . . . 16 CYLINDER BLOCK. . . . . . . . . . . . . . . . . . . . . . . . 52
CYLINDER BORE--HONING . . . . . . . . . . . . . . . . 16 INTAKE MANIFOLD . . . . . . . . . . . . . . . . . . . . . . . 52
HYDROSTATIC LOCK . . . . . . . . . . . . . . . . . . . . . 17 EXHAUST MANIFOLD . . . . . . . . . . . . . . . . . . . . . 53
VALVE TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 SPECIFICATIONS
VALVE, GUIDE AND SEAL . . . . . . . . . . . . . . . . . . 17 2.5L ENGINE SPECIFICATIONS . . . . . . . . . . . . . . 53
PISTON--FITTING . . . . . . . . . . . . . . . . . . . . . . . . 19 SPECIFICATIONS--TORQUE . . . . . . . . . . . . . . . . 56
PISTON RING--FITTING . . . . . . . . . . . . . . . . . . . 20 SPECIAL TOOLS
CONNECTING ROD BEARINGS--FITTING . . . . . 22 2.5L ENGINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
CRANKSHAFT MAIN BEARINGS--FITTING . . . . . 25
REMOVAL AND INSTALLATION
ENGINE MOUNTS--FRONT. . . . . . . . . . . . . . . . . 28
9-2 2.5L ENGINE AN
DESCRIPTION AND OPERATION
ENGINE
DESCRIPTION
The 2.5 liter (150 CID) four-cylinder engine is an
In-line, lightweight, overhead valve engine.
This engine is designed for unleaded fuel. The
engine cylinder head has dual quench-type combus-
tion chambers that create turbulence and fast burn-
ing of the air/fuel mixture. This results in good fuel
economy.
The cylinders are numbered 1 through 4 from front
to rear. The firing order is 1-3-4-2 (Fig. 1).
The crankshaft rotation is clockwise, when viewed
from the front of the engine. The crankshaft rotates
Fig. 2 Build Date Code Location
within five main bearings and the camshaft rotates
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