Chrysler 2000 LHS Owner's Manual page 965

9 - 84 3.2/3.5L ENGINE
DIAGNOSIS AND TESTING (Continued)
CONDITION
ENGINE MISSES ON
ACCELERATION
ENGINE MISSES AT HIGH
SPEED
ENGINE DIAGNOSIS—MECHANICAL
CONDITION
NOISY VALVES
CONNECTING ROD
NOISE
POSSIBLE CAUSE
1. Dirty or incorrectly gapped spark
plugs.
2. Contamination in Fuel System.
3. Burned, warped, or pitted valves.
4. Faulty coil(s).
1. Dirty or incorrect spark plug gap.
2. Faulty coil(s).
3. Dirty fuel injector(s).
4. Contamination in fuel system.
POSSIBLE CAUSES
1. High or low oil level in crankcase.
2. Thin or diluted oil.
3. Low oil pressure.
4. Dirt in tappets/lash adjusters.
5. Worn rocker arms.
6. Worn tappets/lash adjusters.
7. Worn valve guides.
8. Excessive runout of valve seats on
valve faces.
9. Missing adjuster pivot.
1. Insufficient oil supply.
2. Low oil pressure.
3. Thin or diluted oil.
4. Excessive bearing clearance.
5. Connecting rod journal out-of-round.
6. Misaligned connecting rods.
CORRECTION
1. Clean spark plugs and set gap. Refer
to IGNITION SYSTEM.
2. Clean fuel system and replace fuel
filter.
3. Replace valves.
4. Test and replace as necessary. Refer
to IGNITION SYSTEM.
1. Clean spark plugs and set gap. Refer
to IGNITION SYSTEM.
2. Test and replace as necessary. Refer
to IGNITION SYSTEM.
Test and replace as necessary. Refer to
FUEL SYSTEM.
4. Clean system and replace fuel filter.
CORRECTION
1. Check and correct engine oil level.
2. Change oil to correct viscosity.
3. Check and correct engine oil level.
4. Replace rocker arm/hydraulic lash
adjuster assembly.
5. Inspect oil supply to rocker arms.
6. Install new rocker arm/hydraulic lash
adjuster assembly.
7. Ream guides and install new valves
with oversize stems.
8. Grind valve seats and valves.
9. Replace rocker arm/hydraulic lash
adjuster assembly.
1. Check engine oil level.
2. Check engine oil level. Inspect oil
pump relief valve and spring.
3. Change oil to correct viscosity.
4. Measure bearings for correct
clearance. Repair as necessary.
5. Replace crankshaft or grind surface.
6. Replace bent connecting rods.
LH