Sidekick JSS 4D Hard Top 2WD L4-1.8L (1997)
Lifter / Lash Adjuster: Service Precautions
CAUTION:
^
Don't turn camshafts or start engine (i.e., valves should not be operated) for about half an hour after reinstalling hydraulic valve lash adjusters
and camshafts. As it takes time for valves to settle in place, operating engine within half an hour after their installation may cause interference
to occur between valves themselves or valves and piston.
^
If air is trapped in valve lash adjuster, valve may make tapping sound when engine is operated after valve lash adjuster is installed. In such a
case, run engine for about half an hour at about 2,000 r/min., and then air will be purged and tapping sound will cease. Should tapping sound
not cease, it is possible that valve lash adjuster is defective. Replace it if defective. If defective adjuster can't be located by hearing among 16
of them, check as follows:
1. Stop engine and remove cylinder head cover.
2. Push adjuster downward by hand (with less than 20 kg or 44 lbs. force) when cam crest is not on adjuster to be checked and check if
clearance exists between cam and adjuster. If it does, adjuster is defective and needs replacement.