Dodge Caliber. Manual

The 2.0 Liter (122 cu. in.) in-line four cylinder engine is a double over head camshaft with mechanical lash buckets
and four valves per cylinder design. This engine is NOT free-wheeling; meaning that the pistons will contact the
valves in the event of a timing chain failure.

The cylinders are numbered from front of the engine to the rear. The firing order is 1–3–4–2.

The engine identification number is located on the rear of the cylinder block.

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 the Engine Mechanical and the Engine Performance diagnostic charts, for possible causes and corrections
of malfunctions (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING - MECHANICAL) (Refer to 9 - ENGINE - DIAG-
NOSIS AND TESTING - PERFORMANCE).

For fuel system diagnosis, (Refer to 14 - FUEL SYSTEM/FUEL DELIVERY - DIAGNOSIS AND TESTING).

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

•

Engine Cylinder Head Gasket Failure Diagnosis

•

Intake Manifold Leakage Diagnosis

•

Mechanical Valve Tappet Noise Diagnosis

•

Engine Oil Leak Inspection

ENGINE 2.0L WORLD

9 - 1545

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 -
DIAGNOSIS AND TESTING)

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. Set gap. (Refer to 8 -
ELECTRICAL/IGNITION CONTROL
- SPECIFICATIONS)

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
belt/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, manifold
gasket, and vacuum hoses.

4. Faulty ignition coil(s).

4. Test and replace as necessary.
(Refer to Appropriate Diagnostic
Information)

9 - 1546

ENGINE 2.0L WORLD

Dodge Caliber. Manual - part 1064