Page 127 of 1395
Gylinder Head
lllustrated Index
To avoid damage, wait until the engine coolant temperature drops below 100'F (38'C) before removing the cylinder head.
6x1.0mm9.8 N.m (1.0 kgI.m, 7.2 lbf.ft)WASHERReplace when damagedor deteriorated,CYLINDER HEADCOVEBReter to page 6 32 wheninstalling cylinder head cover.
HEAO COVER GASKETBeplace when leaking,damaged or deteriorated.Apply liquid gasket atthe eight corners of the
RUBEER SEALReplace ifor deteriorated,
8 x 1.25 mm24 N.m (2.4
17 tbtft)
See section 4.
CYLINDEBHEAD PLUGReplace-
---..-@0+---.."...-
s<-- KEY
6x1.0mm9.8 N.m (1.0 kgf.m.7.2 tbf.foApply engine oil to thethreads.
CAMSHAFTHOLDER
DOWELPIN
OIL SEALReplace.
CAMSHAFTPULLEY
8 x 1.25 mm37 N.m {3.8 kgf.m,27 tbtft)
OIL SEALReplace.
6x1.0mm9.8 N.m (1.0 kgl.m, 7.2lbtftl
6-14
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Page 128 of 1395
-?E
handling a metal gasket. take care not to fold it or damage the contact surface.
Prior to reassembling, clean all the parts in solvent, dry them and apply lubricant to any contact parts.
CYLINDER HEAD BOLT11 x 1.5 mm85 N.m {8.7 kgf.m,6:} lbf.ft)Tightening, page 6'30.Apply engine oilto the threads.VALVEKEEPERS
\
END PIVOT BOLT63 N.m 16.4 kgl m, 46 lbf.ft)
EXHAUSY VALVESEALReplace.
EXHAUST VALVEGUIDEInspection, page 6-25Replacem6nt, page 6-25Reaming, page 6-27
10 x 1.25 mm4,0 N.m {i1.5 kgf.m.33 rbf.ft)
GASKETReplace.
OIL CONTROLORIFICEClean.
EXHAUST VALVESPRING
SPRING BETAINER
INTAKE VALVESPRING
INTAKE VALVE SEALReplace.
VALVE SPRINGSEAT
INTAKE VALVEGUIDE
Removal, page 6-16Warpage, page 6 27Valve seat reconditioning,page 6 28Installation, page 6-30
EXHAUSTVALVE
INTAKE VALVERemoval, page 6-23Installation, page 6-29
CYLINDER HEAO
HEAD
O.RINGReplace.
8 x 1.25 mm24 N.m (2.4 kgf.m,17 tbf.ft)
DOWEL PIN
6-15
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Page 143 of 1395

Cylinder Head
Installation
Installthe cylinder head in the reverse order of removal:
1. Clean the cylinder head and block surfaces.
2. Clean the oil control orifice. Install the cylinder headgasket, dowel pins and the oil control orifice on thecylinder block. Always use a new cylinder head gas-ket.
CYLII{DER HEADGASKETR€place.
DOWEL PIN
O.RINGRoplace.
DOWELPIN
OIL CONTBOLORIFICEClean.
Apply clean engine oil to the bolt threads and underthe bolt heads.
4. Tighten the cylinder head bolts in two steps. In thefirst step tighten all bolts, in sequence, to about 29
N.m {3.0 kgf.m,22 lbf.ft); in the finat step, tighten inthe same sequence to 85 N.m (8.7 kgf.m,63 lbf.ft).
Use a beam-type torque wrench. When using a pre-
set-type torque wrench, be sure to tighten slowly
and do not overtighten.
lf a bolt makes any noise while you are torquing it,loosen the bolt, and retighten it from the 1st step.
CYLINDER HEAD BOLTS TOROUE SEOUENCE:
Tighten the intake manifold mounting bolts (see
page 6-21).
Install the exhaust manifold bracket. and tighten thenew self-locking nuts (see page 6-20).
6-30
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Page 144 of 1395

7.Place the rocker arms on the pivots and the valve
stems. Put the rocker arms in their original posi-
lrons.
lnstall the camshafts, then install the oil seals with
the open side (spring) facing in. Make sure that the
keyways on the camshafts are facing up and the No.
1 piston is at TDC.
Clean and dry the cylinder head mating surfaces.
Apply liquid gasket (P/N 08718 - 0001 or 08718 -
0OO3) to the head mating surfaces of the No. 1 and
No. 6 camshaft holders on both the intake and
exhaust side.
L
No. I
EXHAUST
II{TAKE
Apply liquid gasket to th€ shaded areas.
't't,
'10. lnstall the camshaft holders.
NOTE:
o "1" or "E' marks are stamped on the camshaft
holders.
. The arrows marked on the camshaft holders
should point at the timing belt.
Tighten each bolt in two steps to ensure that the
rockers do not bind on the valves.
Wipe off the excess liquid gasket from the No. 1 and
No. 6 camshaft holders with a shop towel,
Specified torque:
9.8 N.m (1.0 kgf.m, 7.2 lbf.ft)
Apply engine oil to the bolt ihreads.
I?,ITAKE
EXHAUST
(cont'd)
6-31
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Page 146 of 1395

21.
22.
Check that the mating surfaces are clean and dry.
Apply liquid gasket, part No. 08718 - 0001 or 08718- 0003, to the head cover gasket at the eight corners
of the recesses.
NOTE:
. Do not install the parts if five minutes or more
have elapsed since applying liquid gasket.
Instead, reapply liquid gasket after removing old
residue.
. After assembly. wait at least 30 minutes before
filling the engine with oil.
Apply liquid gasket tothe shaded areas.
Hold the head cover gasket in the groove by placing
your fingers on the camshaft holder contacting sur-
faces (top of the semicirclesl.
Once the cylinder head cover is on the cylinder
head, slide the cover slightly back and forth to seat
the head cover gasket.
Inspect the cover washers. Replace any washer that
is damaged or dete(iorated.
23.
24.
25. Tighten the nuts in tvvo or three steps. In the final
step, tighten all nuts, in sequence. to 9.8 N.m (1.0
kgf.m, 7.2 lbf.ft).
Check that all tubes, hoses and connectors are
installed correctly.
26.
6-33
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Page 352 of 1395

ldle Control System
ldle Control System
I P0505 | The scan tool indicates Diagnostic T.ouble Code (DTCI PO5O5: ldlecontrol svstem mattunction.
NOTE: lf DTC P1508 is stored at the same time as DTC P0505, troubleshoot DTC P1508 first. then troubleshoot DTC p0505.
Possibls Cause
. IAC valve mechanical malfunction. Throttle body clogged port, improper adlustment. Intake manifold gasket leakaging. Intake air hose loose leakaging. Vacuum hose leakaging
a ECT sensor incorrect output. Throttle Position sensor incorrect output
Troubleshooting Flowchart
The MIL has been reDorted on.DTC P0505 is sto.ed.
Problem verificationi1. Start the engine. Hold theengine at 3,000 rpm with noload (in Park or neutral) untilthe radiator Ian comes on, thenlet it idle.2. With the scan tool, check thelollowing items.- Throttle position should beapprox. 10% with the throt-tle {ully closed.- Engine coolant temperature shorJld be 194 - 205'F(90 - 96"C).lf they are not within thespec., repair the faulty sen-sor circuit.3 Check the engine speed atidle with no-load conditions:headlights, blower fan. reardefogger, radiator lan, and airconditioner are not operaling,
Inte.mittent failure. syltem is OKat this time.ls it 750 {730)* i 50 rpm?
ls il 700 (680)' rpm or less?
{To page 11-151)(To page 1'l-151)
l:'99 - 00 models
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