Kia Carnival (2007 year). Manual — part 3

2007 > 2.7L V6 GASOLINE >

TROUBLESHOOTING

Symptom

Suspect area

Remedy

Engine misfire with
abnormal internal
lower engine noises.

Worn crankshaft bearings.
Loose or impropes engine drive plate.

Replace the crankshaft and bearings as
required.
Repair or replace the drive plate as required.

Worn piston rings.
(Oil consumption may or may not cause the
engine to misfire.)

Inspect the cylinder for a loss of compression.
Repair or replace as required.

Worn crankshaft thrust bearings

Replace the crankshaft and bearings as
required.

Engine misfire with
abnormal valve train
noise.

Stuck valves.
(Carbon buildup on the valve stem)

Repair or replace as required.

Excessive worn or mis-aligned timing chain.

Replace the timing chain and sprocket as
required.

Worn camshaft lobes.

Replace the camshaft and valve lifters.

Engine misfire with
coolant consumption.

a. Faulty cylinder head gasket and/or

cranking or other damage to the cylinder
head and engine block cooling system.

b. Coolant consumption may or may not

cause the engine to overheat.

a. Inspect the cylinder head and engine

block for damage to the coolant passages
and/or a faulty head gasket.

b. Repair or replace as required.

Engine misfire with
excessive oil
consumption.

Worn valves, guides and/or valve stem oil
seals.

Repair or replace as required.

Worn piston rings.
(Oil consumption may or may not cause the
engine to misfire)

a. Inspect the cylinder for a loss of

compression.

b. Repair or replace as required.

Engine noise on start-
up, but only lasting a
few seconds.

Incorrect oil viscosity.

a. Drain the oil.

b. Install the correct viscosity oil.

Worn crankshaft thrust bearing.

a. Inspect the thrust bearing and crankshaft.

b. Repair or replace as required.

Upper engine
noise,regardless of
engine speed.

Low oil pressure.

Repair or replace as required.

Broken valve spring.

Replace the valve spring.

Worn or dirty valve lifters.

Replace the valve lifters.

Stretched or broken timing chain and/or
damaged sprocket teeth.

Replace the timing chain and sprockets.

Worn timing chain tensioner, if applicable.

Replace the timing chain tensioner as
required.

Worn camshaft lobes.

a. Inspect the camshaft lobes.

b. Replace the timing camshaft and valve

lifters as required.

Worn valve guides or valve stems.

Inspect the valves and valve guides,then
repair as required.

Stuck valves. Carbon on the valve stem or
valve seat may cause the valve to stay open.

Inspect the valves and valve guides, then
repair as required.

Worn drive belt, idler, tensioner and bearing.

Replace as required.

Lower engine
noise,regardless of

Low oil pressure.

Repair as required.

noise,regardless of
engine speed.

Loose or damaged drive plate.

Repair or replace the drive plate.

Damaged oil pan, contacting the oil pump
screen.

a. Inspect the oil pan.

b. Inspect the oil pump screen.

c. Repair or replace as required.

Oil pump screen loose, damaged or
restricted.

a. Inspect the oil pump screen.

b. Repair or replace as required.

Excessive piston-to-cylinder bore clearance.

a. Inspect the piston, piston pin and cylinder

bore.

b. Repair as required.

Excessive piston pin-to-piston clearance.

a. Inspect the piston, piston pin and the

connecting rod.

b. Repair or replace as required.

Excessive connecting rod bearing clearance

Inspect the following components and repair
as required.

a. The connecting rod bearings.

b. The connecting rods.

c. The crankshaft pin journals.

Excessive crankshaft bearing clearance.

Inspect the following components, and repair
as required.

a. The crankshaft bearings.

b. The crankshaft main journals.

c. The cylinder block.

Incorrect piston, piston pin and connecting rod
installation

a. Verify the piston pins and connecting rods

are installed correctly.

b. Repair as required.

Engine noise under
load.

Low oil pressure

Repair or replace as required.

Excessive connecting rod bearing clearance .

Inspect the following components and repair
as required :

a. The connecting rod bearings.

b. The connecting rods.

c. The crankshaft.

Excessive crankshaft bearing clearance.

Inspect the following components, and repair
as required.

a. The crankshaft bearings.

b. The crankshaft main journals.

c. The cylinder block.

Engine will not crank-
crankshaft will not
rotate.

Hydraulically locked cylinder.

a. Coolant/antifreeze in cylinder.

b. Oil in cylinder.

c. Fuel in cylinder.

a. Remove spark plugs and check for fluid.

b. Inspect for broken head gasket.

c. Inspect for cracked engine block or

cylinder head.

d. Inspect for a sticking fuel injector and/or

leaking fuel regulator.

Broken timing chain and/or timing chain
and/or timing chain gears.

a. Inspect timing chain and gears.

b. Repair as required.

Material in cylinder.

a. Broken valve

b. Piston material

c. Foreign material

a. Inspect cylinder for damaged components

and/or foreign materials.

b. Repair or replace as required.

Seized crankshaft or connecting rod bearings.

a. Inspect crankshaft and connecting rod

bearing.

b. Repair as required.

Bent or broken connecting rod.

a. Inspect connecting rods.

b. Repair as required.

Broken crankshaft.

a. Inspect crankshaft.

b. Repair as required.

2007 > 2.7L V6 GASOLINE >

Compression pressure inspection

If the there is lack of power, excessive oil consumption or poor fuel economy, measure the compression
pressure.

1. Warm up the engine until the normal operating temperature becoming 80~95°C(176~203°F).

2. Remove the surge tank.

3. Remove the ignition coil connectors(B) and ignition coils.

4. Using a 16mm plug wrench, remove the 6 spark plugs.

5. Check cylinder compression pressure.

(1) Insert a compression gauge into the spark plug hole.

(2) Open the throttle fully.

(3) With the fully-open throttle in cranking, measure the compression pressure.

Always use a fully charged battery to get the engine speed of 250 rpm or more.

Repeat steps 1) through 3) for each cylinder.

This measurement must be done in as short a time as possible.

Compression pressure: 1,176.79kPa (12.0kgf/cm

², 170.68psi) - 200 ~ 250rpm

Minimum pressure: 1,029.69kPa (10.5kgf/cm

², 149.34psi)

Difference between cylinders: 98.07kPa (1.0kgf/cm

², 14.22psi)

(4) If the compression pressure in 1 or more cylinders is lower than the specification above, pour a small amount

of engine oil into the cylinder through the spark plug hole, repeat the steps (1) through (3) for the cylinder and
measure the pressure again.

a. If adding oil increases the pressure up, the piston rings or cylinder bores might be worn or damaged.

b. If the pressure doesn't increase, a valve may be sticking or seating may be improper, or there may be

leakage from the gasket.

6. Reinstall the spark plugs.

7. Install the ignition coils and connect ignition coil connectors.

8. Install the surge tank.

VALVE CLEARANCE INSPECTION AND ADJUSTMENT

Inspect and adjust the valve clearance when the engine is cold (Engine coolant temperature : 20°C
±5°C(59~77°F)) and cylinder head is installed on the cylinder block.