Kia Rio: Inspection
Cylinder Head
|
1. |
Inspect for flatness.
Using a precision straight edge and feeler gauge, measure the
surface the contacting the cylinder block and the manifolds for warpage.
Flatness of cylinder head gasket
surface
Standard :
Less than 0.05mm (0.0020in) for total area
Less than 0.02mm (0.0008in) for a section of 100mm (3.9370in)
X 100mm (3.9370in)
|
|
|
2. |
Inspect for cracks.
Check the combustion chamber, intake ports, exhaust ports and
cylinder block surface for cracks. If cracked, replace the cylinder
head.
|
Valve And Valve Spring
|
1. |
Inspect the valve stems and valve guides.
|
(1) |
Using a caliper gauge, measure the inner diameter of valve
guide.
Valve guide inner diameter
:
5.500 ~ 5.512mm (0.2165 ~ 0.2170in)
|
|
|
(2) |
Using a micrometer, measure the outer diameter of valve
stem.
Valve stem outer diameter
Intake : 5.465 ~ 5.480mm (0.2152 ~ 0.2157in)
Exhaust : 5.458 ~ 5.470mm (0.2149 ~ 0.2154in)
|
|
|
(3) |
Subtract the valve stem outer diameter measurement from
the valve guide inner diameter measurement.
Valve stem- to-guide
clearance
Intake : 0.020 ~ 0.047mm (0.0008 ~ 0.0019in)
Exhaust : 0.030 ~ 0.054mm (0.0012 ~ 0.0021in)
|
If the clearance is greater than specification, replace
the valve or the cylinder head.
|
|
|
2. |
Inspect the valves.
|
(1) |
Check the valve is ground to the correct valve face angle.
|
|
(2) |
Check that the surface of valve for wear.
If the valve face is worn, replace the valve.
|
|
(3) |
Check the valve head margin thickness.
If the margin thickness is less than minimum, replace
the valve.
Margin
Standard
Intake : 1.10mm (0.0433in)
Exhaust : 1.26mm (0.0496in)
|
|
|
(4) |
Check the length of valve.
Valve length
Standard
Intake : 93.15mm (3.6673 in)
Exhaust : 92.60mm (3.6457 in)
|
|
|
(5) |
Check the surface of valve stem tip for wear.
If the valve stem tip is worn, replace the valve.
|
|
|
3. |
Inspect the valve seats.
|
(1) |
Check the valve seat for evidence of overheating and improper
contact with the valve face. If the valve seat is worn, replace
the cylinder head.
|
|
(2) |
Check the valve guide for wear. If the valve guide is
worn, replace the cylinder head.
|
|
|
4. |
Inspect the valve springs.
|
(1) |
Using a steel square, measure the out-of-square of valve
spring.
|
|
(2) |
Using a vernier calipers, measure the free length of valve
spring.
Valve spring
Standard
Free height : 45.1mm (1.7756in)
Out of square : Less than 1.5°
|
|
|
Identify MLA(Mechanical lash adjuster), valves, valve springs
as they are removed so that each item can be reinstalled i ...
•
Thoroughly clean all parts to be assembled.
•
...
See also:
Weight Classification System (WCS) Removal
1.
Disconnect the battery negative cable, and wait for at least three
minutes before beginning work.
2.
Remove the front passenger seat ass ...
Installation
•
Install the component with the specified torques.
•
...
Component Location
1. Power door mirror
2. Power door mirror switch
3. Folding mirror switch
...
Disassembly
Reassembly