Kia Sedona (2008 year). Manual - 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.