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HYDRAULIC LASH ADJUSTER (HLA) INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]

HYDRAULIC LASH ADJUSTER (HLA) INSPECTION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))]

SM2565615

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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-G (WITHOUT CYLINDER DEACTIVATION (US))].)
― 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-G (WITH CYLINDER DEACTIVATION (US))].)
Engine oil deterioration
• Replace the engine oil. (See ENGINE OIL REPLACEMENT [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
*: Period of time engine oil flows to the HLA, this value includes tolerance caused by the ambient temperature and the oil used.



HLA Inspection

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

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

3.Remove the ignition coil/ion sensors. (See IGNITION COIL/ION SENSOR REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

4.Remove the cylinder head cover. (See TIMING CHAIN REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)

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

• If the HLA drops, replace the HLA. (See HYDRAULIC LASH ADJUSTER (HLA) REMOVAL/INSTALLATION [SKYACTIV-G (WITHOUT CYLINDER DEACTIVATION (US))].)
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6.Install in the reverse order of removal.