100 HONDA CIVIC 2000 6.G Owner's Guide

Valve Clearance
Adjustment
NOTE:
. Valves should be adjusted only when the cylindsrhead temperature is less than 100"F (38"C).
. After adjusting, retorque the crankshaft pulley bolt(see page 6-16).
1, Remove the cylinder head cover.
NOTE; Refer to page e46 when installing the cytinderhead cover.
2. Remove the upper cover (see page 6-19).
3. Set the No. 1 piston at TDC. The "UP" mark on the
cam-shaft pulley should be at top, and the TDC
marks should align with the cylinder head surface.
TDC MARKS
4. Adjust valves on No, 1 cylinder.
Intako: 0.18 - 0.22 mm {0.007 - 0.009 in}
Exhaust: 0.23 - 0.27 mm (0.009 - 0.011 inl
"UP" MARK
6-12
No.4
5. Loosen the locknut, and turn the adjustment screwuntil the feeler gauge slides back and forth with asliOht amount of drag,
D16Y7 engin.:
CAUTION: Do not oyertighlen the locknuts; thorockor arms are made of aluminum.
INTAKE end EXHAUST VALVELOCKNUTS
Dl6Y5, Dl6Y8 engin€3:
INTAKE .nd EXHAUST VALVELOCKNUTS20 N.m 12.0 kstm, 14lbtft)
Adiusting screw locations:
IMTAKEo.4 1{o. 3 No. 2
tr'
(
nb.3 No.2 No. 1EXHAUST
18 N.m (1.8 kgI.m, 13 tbl.ftl

Removal
NOTE:
. Replace the timing belt at 105,000 miles (168.000 km)
according to the maintenance schedule (normal con-
ditions/severe conditions).
lf the vehicle is regularly driven in one or more of the
followlng conditions, replace the timing belt at 60.000
miles (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 at
top dead center (TDC) before removing the belt (see
page 6'21).
. Inspect the water pump before installing the timing
belt {see Page 10-14).
1. Remove the splash shield (see page 5-7).
2. Loosen the mounting bolt and lock bolt. then remove
the power steering (P/S) pump belt and pump
MOUNTING BOLT
8 x 1.25 mm2il N m 12.4 kgl m, 17 lbf'ft)
P/S PUMPBELT
I x 1.25 mm24 N m (2.4 kgf m, 17 lbt ft)
Loosen the idler pulley center nut and adjusting
bolt, then remove the air conditioning (AVC) com-
pressor belt (see Page 5-6).
Loosen the mounting nut and lock bolt, then remove
the alternator belt.
ALTERNATORBELTLOCK BOLTI x 1.25 mm24 N.m 12.4 kgf.m,r? tbI.ft)
3.
MOUNTING NUT10 x 1.25 mm44 N.m 14.5 kgl m,
33 rb{ ft)
5. Remove the dipstick, then remove the upper cover
and idler PulleY bracket
NOTE: Do not use the upper cover to store removed
items.
6x1.0mm9.8 N.m 11.0 kgf.m,7.2
IDLERI x 1.25 mm24 N.m (2.4 kgl.m, 17 lbf'ft)BRACKET
6. Remove the upper bracket {see page 6-29)
NOTE:
. Use a jack to support the engine before the upper
bracket is removed
. Make sure to place a cushion between the oil
pan and the jack.
Remove the crankshaft pulley (see page 6-16).
Remove the lower cover and dipstick tube
NOTE; Do not use the lower cover to store removed
items.
1.
.'.
DIPSTICK TUBE
LOWER
6x1.0mm9.8 N.m (1.0 kgf m,
7.2 rbt.ft)
(cont'd)
6-19
Replace.

Gylinder Head
lllustrated Index
CAUTION:
. To avoid damage, wait until the engine coolant temperatule drops below 100"F (38'C) before removing the cylinder
head.
. When handling a metal gasket, take care not to fold it or damage the contact surface'
NOTEr Use new O-rings and gaskets when reassembling'
CYLINDER HEAD
COVERRefer to page 6 46, when
installing cylinder head cover.
WASHERReplace when damaged
or deteriorated.
O.RINGReplace.
6x1.0mm9.8 N.m 11.0 kgf.m, 7.2 lbfft)Apply soapsuds to threads and cylinder head
contact surface when replacing the rubber
seal, then temove any soapsuds after install
ing rubber seal.
RUBBER SEALReplace when damagedor deteriorated.
CYLINDER HEAD BOI-T
10 x 1.25 mm67 N.m 16.8 kgf m, a9 lbt'ft)
Tightening, Page 6-46
Apply engine oilto the threads.HEAD COVEB GASKETReplace when leaking,
damaged or deteriorated.Apply liquid gasket at
the four corners ol therecesses,
DISTRIBUTORSee section 23.
8 x 1 .25 mm24 N.m (2.4 kgf.m,17 tbt.ft)
CYLINDER HEADGASKETReplace.
8 x 1.25 mm24 N.m {2.4 kgf m, 17 lbf ftl
t(cont'd)
6-23
PINS

Removal
Engine removal is not required for this procedure
!!!s@ Make sure iacks and salety stands are
f ta"eata"ea propetty and hoist brackets are attached to the
correct positions on the engine.
CAUTION:
. Use tender covels to avoid damaging painted sul-
faces.
o To avoid damage, unplug the wiling connectors
carefully while holding the connector portion to
avoid damage.
. To avoid damaging the cylinder head, wait until the
engine coolant temperature drops below 100"F
{38"C} before loossning the tetaining bolts.
NOTE:
o Mark all wiring and hoses to avoid misconnectlon
Also, be sure that they do not contact other wiring or
hoses, or interfere with other parts.
. Inspect the timing belt before removing the cylinder
h ead.
. Turnthe crankshaft pu lley so that the No. lpistonisat
top dead center (see Page 6-21)
'1. Disconnect the negative terminal from the battery'
Drain the engine coolant (see page'10-7).
a Remove the radiator cap to speed draining.
Remove the intake air duct and air cleaner housing
(see page 5 3).
Remove the mounting bolt and lock bolt. then
remove the power steering (P/S) pump belt and
pump (see page 5'5).
Loosen the idler pulley center nut and adjusting
bolt' then remove the air conditioning (A'lc) com-
pressor belt (see Page 5-6).
Loosen the mounting nut and lock bolt. then
remove the alternator belt (see page 6-19).
Remove the P/S pump bracket (see page 5-12).
3.
4.
2.
6.
1.
8. Remove the throttle cable by loosening the locknut,
then slip the cable end out of the throttle linkage
NOTE:
. Take care not to bend the cable when removing it
Always replace any kinked cable with a new one
. Adjust the throttle cable when installing (see sec-
tion 1 1).
D16Y7 engine:
Dl6Y5, Dl6Y8 engines:
THFOTTLECABLE
(cont'd)
6-27
LOCKNUT
CABLE

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

Valve Guides
Replacement (cont'd)
Working from the camshaft side, use the driver andan air hammer to drive the guide about 2 mm (0.1 in)towards the combustion chamber. This will knock offsome of the carbon and make removal easier.
CAUTION:
. Always wear satety goggles or a face shield when
driving valve guides.
. Hold the air hammer directly in line with thevalve guide to prevent damaging the driver.
Turn the head over, and drive the guide out towardthe camshaft side of the head.
VALVE GUIOE ORIVER,5.5 mm07742 - 001 01 00
It a valve guide still won't move, drill it out with a8 mm {5/16 in) bit, then try again.
CAUTION: Drill guides only in extreme cases; you
could damage the cylinder head it the guide breaks.
6. Remove the new guides from the freezer, one at atime, as you need them.
6-42
I7. Apply a thin coat of clean engine oil to the outsideof the new valve guide. Install the guide from thecamshaft side of the head; use the special tool todrive the guide in to the specified insralled height. lfyou have all 16 guides to do, you may have to reheat
the head.
VALVE GUIOEDRIVER,5.5 mm07742 - 0010100
ll
Valve Guide lnstalled Height:
Intake: 17.85 - 18.35 mm (0.703 - 0.722 inl
Exhausi: 18.65 - 19.15 mm (0.734 - 0.754 in)
VALVE GUIDE

Special Tools
(\
Ref. No. I Tool NumberDescriptionOty Page Relerence
q oTHAH PJ7010B
g I 07JAA-001020A
g I 07JAB-0010204
I 07JAB - 0010404
g 07LAJ - PR3020A
|6) 07MAA - PR70100
g I ozvu,r - enu orzo
g 07MAF - PR9010A
g 07742 - 0010100(!D I 07757-PJ10104
Valve Guide Reamer,5.5 mm
Socket, 19 mm
Holder Handle
Pulley Holder Attachment. 50 mm
Air Stopper
Tappet Adjuster
Tappet Locknut Wrench
Valve Spring Compressor Attachment ExtensionValve Guide Driver, 5.5 mm
Valve Spring Compressor Attachment
1 I 6-81
1 659
1 6-59
1 ] 6-5s
1 I 6-55
1 6-57
1 6-57
1 J 6-77
1 6-80, 81
1 6-71
ta;
aL)'n
-=<-,,LE;;
(D
a
6-50
\-

Remove the cylinder head cover.
NOTE: Refer to page 6-88 when installing the cylin-
der head cover.
Push the mid rocker arm on the No. 1 cylinder man-
ually.
Check that the mid rocker arm moves independently
of the primary and secondary rocker arms.
Check the mid rocker arm ot each cylinder at TDC'
. lf the mid rocker arm does not move, removs the
mid, primary and secondary rocker arms as an
assembly and check that the pistons in the mid
and primary rocker arms move smoothly.
. lf any rocker arm needs replacing, replace the
primary. mid, and secondary rocker arms as an
assembly.
7.
2. Plug the
per).
Inspection Using SPecial Tools
CAUTION:
. B€fore using tho Yalvo inspeciion tool, mako suro
that ths air pre3sure gauge on the air comprossor
indicatos ovor /rco kPa (,1 kgf/cm', 57 psi)
. In3poct ths valve closranca bafore rock$ arm impoc'
tion.
. Cover the timing beh whh I shop towel to prcvenl
gstting oil on the bolt'
. Chock ths mid rocker arm of each cylindll at TDC'
1. Remove the cYlinder head cover.
NOTE: Rsfer to page 6-86 when installing the cylin-
der head cover.
relief hole with the special tool (Air Stop-
OTLA' - PRSO2OA
3. Remove the bolt and washer from the inspection
hole and connoct the an air pressure regulator with
a 0 - 100 psi gauge.
AIF STOPPEBTNSPECTION HOIEOTLA' - PR3O2OA
t0 x 1.0 mrn20 N.m {2.0 kgf m,14 tbt'fr)
AIR PRESSUREREGULATOR{Cornm.rcirlly avril.bl.lBEGULATOR VALVE. Pull the lever andturn to adjust.{cont'd}
6-55

Valve Glearance
Adjustment
NOTE:
. Valves should be adjusted only when the cylinder
head temperaturs is less than 100'F (38'C)'
. After adjusting, retorque the crankshaft pulley bolt to
177 N.m (18.0 kgf'm, 130 lbt'ft)
1. Remove the cylinder head cover'
NOTE: Refer to page G86 when installing the cylin-
der head cover.
2. Set No. 1 pi$on at TDC. The "UP" mark on the pullsy
should be at the top, and TDC grooves on the pulley
should align with the pointer on the back cover' TDC
grooves {white paint) on the crankshaft pulley should
align with the pointer on the timing belt lower cover'
Number I Piston at TDC:
4.
Adjust valves on No. 1 cylinder.
lntako: 0.15 - 0.19 mm {0'006 - 0.007 in)
ExhaGt 0.17 - 0.21 mm {0'007 - 0 008 inl
Loosen the locknut, and turn the adjusting screw
until the feeler gauge slides back and forth with a
slight amount of drag.
TAPPET ADJUSTERWFENCH SET07MM - PR70110
TAPPET LOCKNUTWRENCH07MAA - PR70120
Adiusting sclaw location:
LOCKNUT20 N.m {2.0 kgf'm, lil lbt'ftl
(cont'd)
6-57

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