Kia Sedona (2008 year). Instruction — part 339

4. Remove the camshaft assembly (A).

Fig. 9: Identifying Camshaft Assemblies
Courtesy of KIA MOTORS AMERICA, INC.

5. Remove MLAs.

6. Measure the thickness of the removed tappet using a micrometer.

Fig. 10: Measuring Thickness Of Tappet With Micrometer
Courtesy of KIA MOTORS AMERICA, INC.

7. Calculate the thickness of a new tappet so that the valve clearance comes within the specified

value.

Valve clearance (Engine coolant temperature: 20°C[68°F])

T: Thickness of removed tappet

A: Measured valve clearance

N: Thickness of new tappet

2008 Kia Sedona

2008 ENGINE Mechanical - Sedona

Microsoft

Saturday, May 22, 2010 3:54:35 PM

Page 14

© 2006 Mitchell Repair Information Company, LLC.

Intake: N = T + [A - 0.20 mm (0.0079 in.)]

Exhaust: N = T + [A - 0.30 mm (0.0118 in.)]

8. Select a new tappet with a thickness as close as possible to the calculated value.

9. Place a new tappet on the cylinder head.

10. Install the intake and exhaust camshaft. Refer to INSTALLATION.

11. Install the bearing caps. Refer to INSTALLATION.

12. Install the timing chain. Refer to REASSEMBLY.

13. Turn the crankshaft two turns in the operating direction (clockwise) and realign crankshaft sprocket

and camshaft sprocket timing marks (A).

Fig. 11: Locating Marks Of Camshaft Timing Sprockets
Courtesy of KIA MOTORS AMERICA, INC.

14. Recheck the valve clearance.

Valve clearance (Engine coolant temperature: 20°C [68°F])

[Specification]

Intake: 0.17-0.23 mm (0.0067-0.0090 in.)

NOTE:

Shims are available in 41 size increments of 0.015 mm (0.0006 in.)
from 3.00 mm (0.1 in.) to 3.600 mm (0.1417 in.)

NOTE:

Applying engine oil at the selected tappet on the periphery and top
surface.

2008 Kia Sedona

2008 ENGINE Mechanical - Sedona

Microsoft

Saturday, May 22, 2010 3:54:35 PM

Page 15

© 2006 Mitchell Repair Information Company, LLC.

Exhaust: 0.27-0.33 mm (0.0106-0.0129 in.)

TROUBLESHOOTING

TROUBLESHOOTING

Symptom

Suspect area

Remedy

Engine misfire with abnormal
internal lower engine noises.

Worn crankshaft bearings.
Loose or improperly installed
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.



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



Coolant consumption may
or may not cause the engine
to overheat.



Inspect the cylinder head
and engine block for
damage to the coolant
passages and/or a
malfunctioning head gasket.



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)



Inspect the cylinder for a
loss of compression.



Repair or replace as
required.

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

Incorrect oil viscosity.



Drain the oil.



Install the correct viscosity
oil.

Worn crankshaft thrust bearing.



Inspect the thrust bearing
and crankshaft.



Repair or replace as
required.

2008 Kia Sedona

2008 ENGINE Mechanical - Sedona

Microsoft

Saturday, May 22, 2010 3:54:35 PM

Page 16

© 2006 Mitchell Repair Information Company, LLC.

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.



Inspect the camshaft lobes.



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, regard-less of
engine speed.

Low oil pressure.

Repair or required.

Loose or damaged drive plate.

Repair or replace the drive plate.

Damaged oil pan, contacting the
oil pump screen.



Inspect the oil pan.



Inspect the oil pump screen.



Repair or replace as
required.

Oil pump screen loose, damaged
or restricted.



Inspect the oil pump screen.



Repair or replace as
required.

Excessive piston-to-cylinder bore
clearance.



Inspect the piston, piston
pin and cylinder bore.



Repair as required.

Excessive piston pin-to-piston
clearance.



Inspect the piston, piston
pin and the connecting rod.



Repair or replace as
required.

Excessive connecting rod bearing
clearance

Inspect the following components
and repair as required.



The connecting rod
bearings.



The connecting rods.



The crankshaft pin journals.

Excessive crankshaft bearing

Inspect the following components,

2008 Kia Sedona

2008 ENGINE Mechanical - Sedona

Microsoft

Saturday, May 22, 2010 3:54:36 PM

Page 17

© 2006 Mitchell Repair Information Company, LLC.