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HYDRAULIC LASH ADJUSTER (HLA) INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))]

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HLA, Switchable HLA Troubleshooting

Item

Occurrence

Possible cause

Action

1

After replacing oil, sound occurs when starting engine

Oil shortage in oil passage

•  Maintain the engine speed between 2,000 to 3,000 rpm for approx. 2 s and 10 min^*, and verify that the sound disappears.

―  If the sound disappears, the HLA and switchable HLA are normal.

―  If the sound does not disappear, go to item 5.

2

Sound occurs at instant when engine is started on vehicle left for 1 day

3

Starter cranked for 3 s or more and sound occurs directly after engine is started

Oil shortage of HLA and switchable HLA

4

Sound occurs directly after engine is started with newly replaced HLA and switchable HLA

5

Sound occurs continuously for 10 min or more

Insufficient oil pressure

•  Inspect the oil pressure. (See OIL PRESSURE INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

―  If less than the specification, inspect each part of the engine.

Malfunction of HLA and switchable HLA

•  Inspect the HLA and switchable HLA. (See HLA, Switchable HLA Inspection.)

6

Sound occurs during idling after high-speed driving

Incorrect engine oil level

•  Inspect the engine oil level. (See ENGINE OIL LEVEL INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

Engine oil deterioration

•  Replace the engine oil. (See ENGINE OIL REPLACEMENT [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

Item	Occurrence	Possible cause	Action
1	After replacing oil, sound occurs when starting engine	Oil shortage in oil passage	• Maintain the engine speed between 2,000 to 3,000 rpm for approx. 2 s and 10 min^*, and verify that the sound disappears. ― If the sound disappears, the HLA and switchable HLA are normal. ― If the sound does not disappear, go to item 5.
2	Sound occurs at instant when engine is started on vehicle left for 1 day
3	Starter cranked for 3 s or more and sound occurs directly after engine is started	Oil shortage of HLA and switchable HLA
4	Sound occurs directly after engine is started with newly replaced HLA and switchable HLA
5	Sound occurs continuously for 10 min or more	Insufficient oil pressure	• Inspect the oil pressure. (See OIL PRESSURE INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].) ― If less than the specification, inspect each part of the engine.
Malfunction of HLA and switchable HLA	• Inspect the HLA and switchable HLA. (See HLA, Switchable HLA Inspection.)
6	Sound occurs during idling after high-speed driving	Incorrect engine oil level	• Inspect the engine oil level. (See ENGINE OIL LEVEL INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)
Engine oil deterioration	• Replace the engine oil. (See ENGINE OIL REPLACEMENT [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

* : Period of time engine oil flows to the HLA and switchable HLA, this value includes tolerance caused by the ambient temperature and the oil used.

HLA, Switchable HLA Inspection

1. Disconnect the negative battery terminal. (See NEGATIVE BATTERY TERMINAL DISCONNECTION/CONNECTION [(E)].)

2. Remove the plug hole plate. (See PLUG HOLE PLATE REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

3. Remove the ignition coil/ion sensors. (See IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

4. Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

5. Press the rocker arm from above and verify that the HLA and switchable HLA does not drop.

• If the HLA and switchable HLA drops, replace the HLA and switchable HLA. (See HYDRAULIC LASH ADJUSTER (HLA) INSPECTION [SKYACTIV-G (WITH CYLINDER DEACTIVATION (E))].)

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6. Install in the reverse order of removal.