Removal |
Engine removal is not required for this procedure.
|
|
Mark all wiring and hoses to avoid misconnection. |
1. |
Shut off the High Voltage circuit. (Refer to Engine Mechanical System - "High Voltage Shutoff Procedure") |
2. |
Remove the air cleaner assembly. (Refer to Intake and Exhaust System - "Air Cleaner") |
3. |
Remove the engine room under cover. (Refer to Engine and Transaxle Assembly - "Engine Room Under Cover") |
4. |
Drain the engine coolant. (Refer to Cooling System - "Coolant") |
5. |
Drain the inverter coolant. (Refer to Hybrid Motor System - "Coolant") |
6. |
Disconnect the radiator upper hose (A).
|
7. |
Disconnect the radiator lower hose (A).
|
8. |
Remove the hybrid power control unit (HPCU) and tray. (Refer to Hybrid Control System - "Hybrid Power Control Unit (HPCU)") |
9. |
Disconnect the reservoir tank coolant hose (A).
|
10. |
Disconnect the hybrid starter generator (HSG) coolant hose (A).
|
11. |
Disconnect the electric water pump (EWP) coolant hose (A).
|
12. |
Remove the high pressure fuel pump foam (A).
|
13. |
Disconnect the fuel hose (A) and purge control solenoid valve (PCSV) hose (B).
|
14. |
Disconnect the heater hose (A).
|
15. |
Remove the front muffler. (Refer to Intake and Exhaust System - "Muffler") |
16. |
Remove the water temperature control assembly and heater pipe. (Refer to Cooling System - "Water Temperature Control Assembly") |
17. |
Remove the intake manifold. (Refer to Intake and Exhaust System - "Intake Manifold") |
18. |
Remove the hybrid starter generator (HSG). (Refer to Hybrid Motor System - "Hybrid Starter Generator (HSG)") |
19. |
Remove the electric EGR control valve. (Refer to Engine Control/Fuel System - "Electric EGR Control Valve") |
20. |
Remove the spark plugs. (Refer to Engine Electrical System - "Spark Plug") |
21. |
Remove the cylinder head cover. (Refer to Cylinder Head Assembly - "Cylinder Head Cover") |
22. |
Remove the exhaust manifold. (Refer to Intake and Exhaust System - "Exhaust Manifold") |
23. |
Remove the timing chain. (Refer to Timing System - "Timing Chain") |
24. |
Remove the CVVT & camshaft.
|
25. |
Remove the hydraulic lash adjuster (HLA) (A) and the swing arm (B).
|
26. |
Remove the cylinder head.
|
Disassembly |
Identify valves and valve springs as they are removed so that each item can be reinstalled in its original position. |
1. |
Remove the valves.
|
Inspection |
Cylinder Head
1. |
Inspect for flatness.
Using a precision straight edge and feeler gauge, measure the contacting surface of the cylinder block and check the manifolds for warpage.
|
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 valve stems and valve guides.
|
2. |
Inspect the valves.
|
3. |
Inspect the valve seats and the valve guides.
|
4. |
Inspect the valve springs
|
HLA (Hydraulic Lash Adjuster)
With the HLA filled with engine oil, hold A and press B by hand.
If B moves, replace the HLA.
Problem |
Possible cause |
Action |
||||
1. Temporary noise when starting a cold engine |
Normal |
This noise will disappear after the oil in the engine reaches the normal
pressure. |
||||
2. Continuous noise when starting the engine after being parked for more
than 48 hours |
Oil leakage of the high pressure chamber on the HLA, allowing air to get
in |
Noise will disappear within 15 minutes when engine runs at 2000-3000 rpm.
If it doesn’t disappear, refer to step 7 below. |
||||
3. Continuous noise when the engine is first started after rebuilding cylinder
head |
Insufficient oil in cylinder head oil gallery |
|||||
4. Continuous noise when the engine is started after excessively cranking
the engine by the starter motor or band |
|
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5. Continuous noise when the engine is running after changing the HLA
|
|
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6. Continuous noise during idle after high engine speed |
Engine oil level too high or too low |
|
||||
Excessive amount of air in the oil at high engine speed |
Check oil supply system. |
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Deteriorated oil |
Check oil quality. If deteriorated, replace with specified type. |
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7. Noise continues for more than 15 minutes |
Low oil pressure |
Check oil pressure and oil supply system of each part of engine. |
||||
Faulty HLA |
Remove the cylinder head cover and press HLA down by hand. If it moves, replace the HLA. |
Reassembly |
|
1. |
Install the valves.
|
Installation |
|
1. |
Install the cylinder head gasket on the cylinder block.
|
2. |
Install the cylinder head assembly.
|
3. |
Install the hydraulic lash adjuster (HLA) (A) and the swing arm (B).
|
4. |
Install the remaining parts in the reverse order of removal. |
5. |
Add all the necessary fluids and check for leaks. Connect KDS/GDS. Check for codes, note, and clear. Recheck.
|
Kia Niro 2017 (DE HEV) Service Manual: Stop Lamp Switch Repair procedures
Removal
1.
Turn ignition switch OFF and disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad")
3.
Remove the knee air bag.
(Refer to Restrain ...
Kia Niro 2017 (DE HEV) Service Manual: Components and components location
Components
1. Rear door trim
2. Rear door delta inner cover
3. Rear door panel & module
4. Rear door delta lower run & channel
5. Rear door side weatherstrip
6. Rear door body side weatherstrip
7. Rear door window glass run
8 ...