Diagnosis And Testing - Engine Diagnosis - Performance - Chrysler 300M Service Manual

9 - 8 ENGINE
ENGINE 3.5L (Continued)
CONDITION
OIL CONSUMPTION OR SPARK
PLUGS FOULED

DIAGNOSIS AND TESTING - ENGINE DIAGNOSIS - PERFORMANCE

CONDITION
ENGINE WILL NOT START
POSSIBLE CAUSES
1. PCV system malfunction.
2. Worn, scuffed or broken rings.
3. Carbon in oil ring slots.
4. Rings fitted too tightly in grooves.
5. Worn valve guide(s).
6. Valve stem seal(s) worn or
damaged.
POSSIBLE CAUSE
1. Weak battery.
2. Corroded or loose battery
connections.
3. Faulty starter.
4. Faulty coil(s) or control unit.
5. Incorrect spark plug gap.
6. Contamination in fuel system.
7. Faulty fuel pump.
8. Incorrect engine timing.
CORRECTION
1. Check system and repair as
necessary. (Refer to Appropriate
Diagnostic Manual)
2. Hone cylinder bores. Install new
rings.
3. Clean pistons and install new
rings.
4. Remove rings and check
grooves. If groove is not proper
width, replace piston.
5. Replace cylinder head(s).
6. Replace seal(s).
CORRECTION
1. Test battery. Charge or replace
as necessary. (Refer to 8 -
ELECTRICAL/BATTERY SYSTEM/
BATTERY - DESCRIPTION)
2. Clean and tighten battery
connections. Apply a coat of light
mineral grease to terminals.
3. Test starting system. (Refer to 8 -
ELECTRICAL/STARTING -
DIAGNOSIS AND TESTING)
4. Test and replace as needed.
(Refer to Appropriate Diagnostic
Information)
5. Check and adjust gap as needed.
6. Clean system and replace fuel
filter.
7. Test fuel pump and replace as
needed. (Refer to Appropriate
Diagnostic Information)
8. Check for a skipped timing
belt/chain or a loose camshaft
sprocket (3.2/3.5L).
LH