KIA Amanti 2007 - Manual (Page 194)

Driving tips
10 5
HLA (Hydraulic Lash Adjuster)
noise
The engine HLA's keep the gap between
the valve and cam at zero regardless of
the valve expansion.
Occasionally, you may hear a temporary
or continuous sound (clatter) from the
engine when starting or idling. This noise
will usually go away by following a few
simple steps:
If the temporary sound occurs when
starting a cold engine:
This is a normal condition. This sound
will disappear after the engine oil has
reached normal operating pressure.
If the sound occurs when starting the
engine after the engine has not been oper-
ated for more than 48 hours; or engine
has been cranked excessively:
This condition may be caused by oil
draining from the HLA's. This allows air to
enter the HLA causing insufficient lubri-
cating oil in the HLA. This will usually dis-
appear within 15 minutes with the engine
running at 2000~3000 rpm. If the sound
does not disappear, have the engine oil
pressure, engine lubrication system and
HLA's inspected by an Authorized Kia
Dealer.
CAUTION
Do not run the engine at more than
3000 rpm until the noise goes away.
Damage to the HLA's could occur.