1996 HONDA CIVIC Can

Disassembly/Reassembly
NOTE:
. ldentify parts as they are removed to ensure reinstallation in original locations'
. lnsDect rocker shafts and rocker arms (see page 6-35).
. Rocker arms must be installed in the same position if reused.
. when removing orinstallingthe rocker arm assembly,donot remove the camshaft holder bolts. The boltswill keepthe
holders, springs and rocker arms on the shaft.
-Zl prio, ,o reassemblinq, clean all the pans in solvent, dry them and apply lubricant to any contact points.
| - TNTAKE RocKER TNTAKE RocKER
D16Y7 engine:
Lefter "8" is stampedon rocker arm.
ARM A(4 placeslARM B
14 places)
INTAXE
ROCKER SHAFTSPRING{4 places)
ROCKER SHAFTCOLLAR14 plac.3l
ROCKER
I
II
I
BA\'A
fift L$\ft
:oo)[*o:
llll.I Jol----tNo.3 CAMSHAFT | | ruo. z cltusxerr 1i
T-* l=Bl-* d
,", 'l l=^ ^l
qJ?[l'-qJ'Ll
'I^ B A
EI
[ilHl"\9
t(cont'd)
6-31

Rocker Arms
Disassembly/Reassembly (cont'dl
NOTE:
. ldentify pans as they are removed to ensure reinstallation in original locations.. Inspect rocker shafts and rocker arms (see page 6-34).. Rocker arms must be installed in the same position if reused.t when removing or installing the rockerarm assembly, do not remove the camshaft holder bolts. The boltswill keeptheholders, springs and rocker arms on the shaft.
I erior to reassembring, crean a

the parts in sorvent, dry them and appry rubricant to any contact points.
D16Y5 engine:
ROCKER ARMS
TIMING PLATERUBBER BANO
(\
-]-
-P'g,rpt+.t't ll
\--,?|, -\2i lNo.5 CAMSHAFT _ lHOLDER l
No. 4 CAMSHAFTHOLDERNo. 3 CAMSHAFIHOLDERNo.2HOLDER
ra
I
EXHAUST ROCKERARM B{,1 plac€s)
EXHAUST ROCKEE SHAFT
Letter "A" is slamped
II{TAKE ROCKER SHAFT
!-r I
?h'ffi*ffi'
/^ ---IOCKER SHAFT
Letter "8" is stamped
6-32

Valves, Valve Springs and Valve Seals
Removal
NOTE: ldentify valves and valve springs as they areremoved so that each item can be reinstalled in its orioi-nal oosition.
'1. Using an appropriate-sized socket and plastic mal-let. lightly tap the valve retainer to loosen the valve
keepers before installing the valve spring compres-
sor.
Install the spring compressor. Compress the spring
and remove the valve keeper.
PLASTIC MALLET
SOCKET
VALVE SPRII{G COMPRESSORSnlp-on CF711 or KD-383whh #32 JAWS
6-38
L
(
3. Install the valve guide seal remover.
SEAL REMOVER vat vF GI nF !
4. Remove the valve seal.
I
VALVE GUIDE SEAL REMOVERLISLE P/N 57900 or KD3350

Cylinder HeadValve Seats
Warpage
NOTE: lf the camshaft-to-holder oil clearances (see
page 6-36) are not within specification, the cylinder head
cannot be resurfaced.
lf the camshaft-to-holder oil clearances are within sDeci,
fications, check the cylinder head lor warpage.
lf warpage is less than 0.05 mm (0.002 in), cylin-
der head resurfacing is not required.
lf warpage is between 0.05 mm (0.002 in) and
0.2 mm {0.008 in), resurface the cylinder head.
Maximum resurface limit is 0,2 mm (0.008 in)
based on a height of 93 mm (3.66 in).
Measure along edges, and three ways across center.
Cylinder Head Height:
Standard {Newl: 92.95 - 93.05 mm
{3.659 - 3.66:} in)
6-40
\
Reconditioning
'1. Renew the valve seats in the cylinder head using a
valve seat cutter.
NOTE: lf the guides are worn (see page 6-39).
replace them (see page 6-41) belore cutting the
valve seats.
VALVE SEATCUTTER(Commercially available)
2.
?
4.
Carefully cut a 45'seat, removing only enough
material to ensure a smooth and concentric seat.
Bevel the upper edge of the seat with the 30. cutter
and the lower edge of the seat with the 60' cutter.
Check the width of the seat and adjust accordingly.
Make one more very light pass with the 45" cutter to
remove any possible burrs caused by the other cut-
Iers.
Valve Seat Width:
Standard (N€w):
Intake: 0.85 - 1.15 mm 10.033 - 0.045 in)
Exhaust: 1.25 - 1.55 mm {0.049 - 0.061 in}
Sorvice Limit:
Intake: 1.6 mm (0.063 inl
Exhausl: 2.0 mm (0.079 in)
Seat Width
5. After resurfacing the seat, inspect for even valve
seatingr Apply Prussian Blue compound to the
valve face, and insert the valve in its original loca-
tion in the head, then liit and snap it closed against
the seat several times.

Valve Guides
7.
VALVESEAT
PFUSSIAN BTUE COMPOUNO
The actual valve seating surface. as shown by the
blue comDound, should be centered on the seat.
. lf it is too high (closer to the valve stem), you
must make a second cut with the 60'cutter to
move it down, then one more cut with the 45'
cutter to restore seat width,
. lf it is too low (closer to the vslve edge), you
must make a second cut with the 30" cutter to
move it uD, then one more cut with the 45'cutter
to restore seat width.
NOTE: The final cut should always be made with
the 45" cutter.
lnsert the intake and exhaust valves in the head and
measure the valve stem installed height.
Intake. Exhau3t Siem Installsd Height:
Standard (New): 53.17 - 53.6,4 mm
12.093 - 2.112 in)
Sorvice Limit: 53.89 mm (2.122 in)
lf the valve stem installed height is over the service
limit. reDlace the valve and recheck. lf its still over
the service limit, replace the cylinder head; the
valve seat in the head is too deep.
VALVE STEMINSTALLED HEIGHT
8.
\-
Replacement
1.As illustrated below, use a commercially-available
air-impact valve guide driver attachment modified
to fit the diameter of the valve guides. In most cases.
the same procedure can be done using the special
tool and a conventional hammer.
VALVE GUIDE DRIVERlCommerciallv available)5.3 mm
87 mm +- 57 mft
t3.43 in) | 12 24 inl
tr-r'10.8 mm(0.42 inl
or
VALVE GUIDE DRIVER, 5.5 mm
07742 - 0010100
Select the proper replacement guides. and chill them
in the freezer section of a refrigerator for about an
nour.
Use a hot plate or oven to evenly heat the cylinder
head to 300"F (150'C). Monitor the temperature with
a cooking thermometer.
CAUTION:
. Do not use a torch; it may warp the head.
Do not got the head hottel than 300"F (150"C1;
excessive heat may loosen thg valve seats.
To avoid burns. use heayy gloves whon handling
the heated cylinder h€ad.
{cont'd)
6-41

VTEC Control SYstem
The scan tool indicates Diagnostic Trouble Code {DTC) Pl259:
VTEC Solenoid Valve circuit
Refer to page 1'l-38 through 11 55 before troubleshooting
Troubleshooting Flowchart
YES
A problem in the WEC Pressure Switch circuit or
* Road Test:Accelerate in 1st gear to an engine speed over 6,000 rp '
Hold that engine speed for at leasttwo seconos'
lf the DTC P1259 is not repeated during the first road test'
repeat this test two more times
VTEC PRESSURE SWITCH 2P
CONNECTOR
Terminalside ofmale termtnals
WM
/1 IBLU/BLKI
/ 1 Y------rt--------- l I
\1-/ |I
I
I1
Wire side of femaleterminals
(cont'd)
6-51
The MIL has been teported on.
DTC P1259 is siored.
Check the VTEC Control SYsiem:
1. Do the engine control module(ECM ) Reset Procedure (see
section 11).
2. Start the engine
3. Warm uP the engine to normal
operating temPerature (cool
ing fan comes on).
4. Do the Road Test.*lntermittent failure, sYstem is OK
at this time.Check for Poor connectlons or
loose wires at VTEC Pressureswilch. VTEC aolenoid valvo and
ECM.
ls DTC P1259 indicated?
Test the VTEC Pressure Switch:
1. Turn the ignition switch OFF.
2. Disconnect the VTEC Pressure
switch 2P connector.
3. Check for continuity between
VTEC pressure switch 2P con
nector telminal No 1 and
No.2.
Reolace the VTEC Pre3sure switch.
Test the VTEC Pressure Switch
Wire:1. Turn the ignition switch ON (ll).
2. N4easure the voltage between
VTEC press u re switch 2P
connector No. 1 and bodyground,
Inspect lor an open or short toground in the wire between the
VTEC orassure swilch and ECM
{c101.lf the wire i3 OK, substitute a
known-good ECM and recheck.
{To page 6 52)

Timing Belt
Removal
NOTE:
. Replace the timing belt at 105,000 mites (168,000 km)according to the maintenance schedule (normal con-ditions/severe conditions).
lf the vehicle is regularly driven in one or more of thefollowing conditions, replace the timing belt at 60,OOOmiles (U.S.A.) 100,000 km {Canada).. In very high temperatures (over 110"F, 43"C).. In very low temperatures (under -20.F, 29.C).. Turn the crankshaft pulley so the No. 1 piston is attop dead center (TDC) before removing the belt (seepage 6-57).
. Inspect the water pump before installing the timingbelt {see page 10-14).
1.
IOLER PULLEY BRACKETEOLT10 x 1.25 mm44 N.m 14.5 kgf.m, 33 bnft)
6-62
Remove the splash shield (see page 5-9).
Remove the adjusting bolt and mounting bolts, thenremove the power steering (P/S) pump belt andpump.
8xL25mm24 N m {2.{ kgf.m, 17 lbf.ft)
Loosen the idler pulley bracket bolt and adjusting bolt,then remove the air conditioning (A,/C) compressorbelt aDJUsnNG
44 N.m 14.5 kgt.m, 33 lbf.ft)
P/S PUMP LOWER ARACKET
a\
4. Loosen the mounting nut and lock bolt, then removethe alternator belt.
LOCK BOLT8 x 1.25 mm24 N.m {2.4 kgt.m.17 rb{.ftl
5. Remove the upper bracket (see page 6-69).
NOTE:
. Use a jack to support the engine before removingthe upper bracket.
o Place a cushion between the oil pan and the jack.
Remove the P/S pump lower bracket
8 x 1.25 mm24 N.m 12.,1 kgf.m,17 tbf.ftl
l0 x 1.25 mm
'-f'
MOUNTING10 x 1.25 mm44 N.m (4.5 kgf.m.33 rbf.fttBELT
HEAT SHIELD

Cylinder Head
Removal (cont'd)
8. Remove the P/S pump lower bracket.
8 x 1.25 mm24 N.m 12.4 kgf.m,17 tbtftl
9.
T SHIELD
10.
P/S PUMP LOWERBRACKET10 x 1.25 mm44 N.m {4.5 kgf.m,33 tbf.frl
Relieve fuel pressure (see section l1).
@ Do not smok6 while working on fuel
system, keep open flam€ or spark away lrom work
ar€a, Drain fuelonly into an approved cortain€r.
Remove the evaporative emission (EVAP) control
canister hose, fuel feed hose and breather hose.
BANJO BOLT33 N.m (3.4 kgl.m.25 lbf.ftl
BREATHERHOSE
WASHERS
6-68
\.
11. Remove the brake booster vacuum hose, fuel return
hose and vacuum hose (see page 5 4).
12. Remove the water bypass hose and positive crankcase
ventilation (PCV) hose.
WATER BYPASSHOSEWATER EYPASSHOSE
Remove the throttle cable and throttle control cable
by loosening the locknut, then slip the cable end out
of the throftle linkage.
NOTE;
. Take care not to bend the cables when removing
them. Always replace any kinked cable with a new
one.
. Adjust the throttle cable when installing (see sec-
tion I I ),. Adjust the throttle control cable when installing(see section 14).
CONTROLCABLE
1a
PCV HOSE