Chrysler PT Cruiser Service & Repair Manual page 1125

PT
CYLINDER HEAD COVER (Continued)
ter locations of cover. Tighten bolts in sequence
shown in (Fig. 41). Using a 3 step torque method as
follows:
(a) Tighten all bolts to 4.5 N·m (40 in. lbs.).
(b) Tighten all bolts to 9.0 N·m (80 in. lbs.).
(c) Tighten all bolts to 12 N·m (105 in. lbs.).
Fig. 41 Cylinder Head Cover Tightening Sequence
(Typical Cover Shown)
(5) Install ignition coil and spark plug wires.
Tighten fasteners to 12 N·m (105 in. lbs.).
(6) If the PCV valve was removed, apply Mopar
Thread Sealant with Teflon to threads and install
valve to cylinder head cover. Tighten PCV valve to 8
N·m (70 in. lbs.).
(7) Connect PCV and make-up air hoses to cylin-
der head cover (Fig. 36).
(8) Install upper intake manifold (Refer to 9 -
ENGINE/MANIFOLDS/INTAKE
INSTALLATION).
HYDRAULIC LASH
ADJUSTERS
DIAGNOSIS AND TESTING
HYDRAULIC LASH ADJUSTER NOISE
DIAGNOSIS
A tappet-like noise may be produced from several
items. Check the following items.
(1) Engine oil level too high or too low. This may
cause aerated oil to enter the adjusters and cause
them to be spongy.
(2) Insufficient running time after rebuilding cylin-
der head. Low speed running up to 1 hour may be
required.
(3) During this time, turn engine off and let set for
a few minutes before restarting. Repeat this several
times after engine has reached normal operating
temperature.
(4) Low oil pressure.
gasket) in the vertical oil passage to the cylinder
head is plugged with debris.
oil pump pick up.
retainer.
mum extension and still leaves lash in the system.
installed in cylinder head. Depress part of rocker
arm over adjuster. Normal adjusters should feel very
firm. Spongy adjusters can be bottomed out easily.
necessary.
REMOVAL
NOTE: This procedure is for in-vehicle service with
camshafts installed.
ENGINE/CYLINDER
COVER(S) - REMOVAL).
INDER HEAD/ROCKER ARMS - REMOVAL).
MANIFOLD -
lifter.
sembly in original position. Lifters are serviced as an
assembly.
INSTALLATION
lifters are at least partially full of engine oil. This is
indicated by little or no plunger travel when the
lifter is depressed.
ENGINE 2.0L DOHC
(5) The oil restrictor (integral to the cylinder head
(6) Air ingested into oil due to broken or cracked
(7) Worn valve guides.
(8) Rocker arm ears contacting valve spring
(9) Rocker arm loose, adjuster stuck or at maxi-
(10) Faulty lash adjuster.
• Check lash adjusters for sponginess while
• Remove suspected lash adjusters, and replace as
(1) Remove cylinder head cover (Refer to 9 -
(2) Remove rocker arm (Refer to 9 - ENGINE/CYL-
(3) Remove hydraulic lifter (Fig. 42).
(4) Repeat removal procedure for each hydraulic
(5) If reusing, mark each hydraulic lifter for reas-
Fig. 42 Hydraulic Lifter
(1) Install hydraulic lifter (Fig. 42). Ensure the
9 - 105
HEAD/CYLINDER HEAD