HYDRAULIC LASH ADJUSTER (HLA) INSPECTION [SKYACTIV-D 2.2]

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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 is 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	HLA oil shortage
4	Sound occurs directly after engine is started with newly replaced HLA
5	Sound occurs continuously for 10 min or more	Insufficient oil pressure	•  Inspect the oil pressure. (See OIL PRESSURE INSPECTION [SKYACTIV-D 2.2].) ―  If less than the specification, inspect each part of the engine.
		HLA malfunction	•  Inspect the HLA. (See 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-D 2.2].)
		Engine oil deterioration	•  Replace the engine oil. (See ENGINE OIL REPLACEMENT [SKYACTIV-D 2.2].)

HLA Inspection

1.  Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-D 2.2].)

2.  Remove the engine cover. (See ENGINE COVER REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

3.  Remove the fuel injectors. (See FUEL INJECTOR REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

4.  Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

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

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•  If the HLA drops, replace the HLA. (See HYDRAULIC LASH ADJUSTER (HLA) REMOVAL/INSTALLATION [SKYACTIV-D 2.2].)

6.  Install in the reverse order of removal.