Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1469
SEAL-CRANKSHAFT REAR OIL
PLATE-FLEX
ROD-PISTON & CONNECTING
RINGS-PISTON
STANDARD PROCEDURE - PISTON RING
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2007
DAMPER-CRANKSHAFT
WINDAGE TRAY
COLLAR-STRUCTURAL
MOUNT-LEFT
MOUNT-RIGHT
MOUNT-REAR
LUBRICATION
CHECKING ENGINE OIL PRESSURE . . . . . . . 2035
OIL
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2036
STANDARD PROCEDURE
COOLER & LINES-OIL
FILTER-OIL
PAN-OIL
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2043
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2047
SWITCH-OIL PRESSURE
PUMP-OIL
MANIFOLD-INTAKE
INTAKE MANIFOLD LEAKS . . . . . . . . . . . . . . . . 2060
INTAKE MANIFOLD UPPER . . . . . . . . . . . . . . . 2061
REMOVAL - INTAKE MANIFOLD LOWER . . . 2063
INTAKE MANIFOLD UPPER . . . . . . . . . . . . . . . 2064
INSPECTION - INTAKE MANIFOLD LOWER . 2064
MANIFOLD-EXHAUST
INSPECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2070
INSTALLATION
VALVE TIMING
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2074
STANDARD PROCEDURE
ENGINE TIMING - VERIFICATION . . . . . . . . . . 2075
COVER-TIMING CHAIN
CHAIN AND SPROCKETS-TIMING
TENSIONER-TIMING CHAIN
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2089
INSTALLATION
9 - 1900
ENGINE - 2.7L DOHC - SERVICE INFORMATION
LX
ENGINE - 2.7L DOHC - SERVICE INFORMATION
DESCRIPTION
The 2.7 Liter (167 Cubic Inches) 60 degree V-6
engine is a double overhead camshaft design with
hydraulic lifters and four valves per cylinder. The
engine does not have provisions for a free wheeling
valve train.
The cylinders are numbered from front to rear, with
the right bank odd numbered, and the left bank even
numbered. The firing order is 1–2–3–4–5–6.
LX
ENGINE - 2.7L DOHC - SERVICE INFORMATION
9 - 1901
The engine identification number is located on the rear
of the cylinder block just below the left cylinder head
DIAGNOSIS AND TESTING
ENGINE DIAGNOSIS - INTRODUCTION
Engine diagnosis is helpful in determining the causes of malfunctions not detected and remedied by routine main-
tenance.
These malfunctions may be classified as either mechanical (e.g., a strange noise), or performance (e.g., engine
idles rough and stalls).
Refer to Service Diagnosis—Mechanical Chart and Service Diagnosis—Performance Chart, for possible causes and
corrections of malfunctions. Refer to FUEL SYSTEM for the fuel system diagnosis.
Additional tests and diagnostic procedures may be necessary for specific engine malfunctions that cannot be iso-
lated with the Service Diagnosis charts. Information concerning additional tests and diagnosis is provided within the
following:
•
Cylinder Compression Pressure Test
•
Cylinder Combustion Pressure Leakage Test
•
Cylinder Head Gasket Failure Diagnosis
•
Intake Manifold Leakage Diagnosis
•
Lash Adjuster (Tappet) Noise Diagnosis
•
Engine Oil Leak Inspection
9 - 1902
ENGINE - 2.7L DOHC - SERVICE INFORMATION
LX
ENGINE DIAGNOSIS - PERFORMANCE
CONDITION
POSSIBLE CAUSE
CORRECTION
ENGINE WILL NOT START
1. Weak battery.
1. Test battery. Charge or replace as
necessary. (Refer to 8 -
ELECTRICAL/BATTERY SYSTEM/
BATTERY - DESCRIPTION)
2. Corroded or loose battery
connections.
2. Clean and tighten battery
connections. Apply a coat of light
mineral grease to terminals.
3. Faulty starter.
3. Test starting system. (Refer to 8 -
ELECTRICAL/STARTING -
DIAGNOSIS AND TESTING)
4. Faulty coil(s) or control unit.
4. Test and replace as needed.
(Refer to Appropriate Diagnostic
Information)
5. Incorrect spark plug gap.
5. Check and adjust gap as needed.
6. Contamination in fuel system.
6. Clean system and replace fuel
filter.
7. Faulty fuel pump.
7. Test fuel pump and replace as
needed. (Refer to Appropriate
Diagnostic Information)
8. Incorrect engine timing.
8. Check for a skipped timing chain.
ENGINE STALLS OR IDLES
ROUGH
1. Idle speed too low.
1. Test minimum air flow. (Refer to
Appropriate Diagnostic Information)
2. Incorrect fuel mixture.
2. (Refer to Appropriate Diagnostic
Information)
3. Intake manifold leakage.
3. Inspect intake manifold gasket,
manifold, and vacuum hoses.
4. Faulty coil(s).
4. Test and replace as necessary.
(Refer to Appropriate Diagnostic
Information)
ENGINE LOSS OF POWER
1. Dirty or incorrectly gapped plugs.
1. Set gap as needed or replace
plug(s).
2. Contamination in fuel system.
2. Clean system and replace fuel
filter.
3. Faulty fuel pump.
3. Test and replace as necessary.
(Refer to Appropriate Diagnostic
Information)
4. Incorrect valve timing.
4. Correct valve timing as needed.
5. Leaking cylinder head gasket.
5. Replace cylinder head gasket.
6. Low compression.
6. Test compression of each
cylinder.
7. Burned, warped, or pitted valves.
7. Replace valves.
8. Plugged or restricted exhaust
system.
8. Check exhaust system restriction.
Replace parts, as necessary.
9. Faulty coil(s).
9. Test and replace as necessary.
(Refer to Appropriate Diagnostic
Information)
LX
ENGINE - 2.7L DOHC - SERVICE INFORMATION
9 - 1903
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