1994 HONDA INTEGRA fuel rail

System Description
Index
FUEL FILTERReplacement, page 11- l OB
FUEL II{JECTORSTroubleshooting, page 1 1-102Replacemont, page 1 1-105
FUEL FEED PIPE
FUEL GAUGE SE]IIDING U]{ITTgsting, s€ction 23
FU€L
FUEL PUMPT€sting. page 11- 1 10Roplscam€nt. page 11-l 10
FUEL FIIL CAP
FUEL TA KR6placomont,page l1-114
EVAFORATIVE EMISSIONIEVAP} TWO WAY VALVETesting, pag€ 11-140
EVAPORATIVEEMTSStOt{{EVAP} PURGECONTROL DIAPHNAGMVALVETroubleshooting, page'l 1-137
PNESSURE REGUIATORTesting, page 11-106Roplac€m€nt, page 1 1-107
FUEL RAIL
EVAFORATIVC EMISSION(EVAPI COI{TROL CANISTERTroubl6shooting. pag6 1 1-'l 37
FUEL VAFON APE
11-6

Fuel Supply System
Fuel Injectors
- --l- - \-l-l
116l- -ltc l-/---r- / ---i- \
The Fuel Injectors a.e a solenoid-actuated constant-stroke pintle type consisting of a solenoid, plungel n€edle valvs and
housing. When cur.ent is applied to the solsnoid coil, the vslve litts up and pressurized fuel is injected. Because the nee-
dle valve litt and the luel pressure are constant, the iniection quantity is determined by the length of time that the valv€
is open (i.e., the duration the cu.rent is supplied to the solenoid coill. The Fu€l Iniector is sealed by an O-ring and seal
ring at the top and bottom. These seals also reduce operating nois6.
O.RII{G FUEL RAIL
The Malfunction Indicator Lamp (MlL) indicates Diagnostic Trouble Code (DTC) l6: A problem in
the Fuel lniector circuit.
FILTER
PTUNGER
-_-- - ___L-
IrGl- lto l--|.---:_-
- Tho MIL has boen roportod on.- Wilh tho SCS .hon connocto.conoctod (soo pago 11-34),code 16 is indicalod.
Do the ECM Besel Procedure (seepage l l -351.
Intermittant tailura, aystam ir OKat thir tim. (t..1 drivo m.y b.nocaar!ry1.Ch.ck lor poor connactiona ot100!6 wir6!.t C221 (loortod rtright .hock low.rl, C121,C122,Cl23, Cl24 llu6l InFctorrl, lndECM.
ls the MIL on and does itindicate code l6?
NOTE: lf engine willnot start, it may tak6lO seconds ol cranking to sgt th6 code.
{To page 1 1-1O31
11-102

Rapl!c!ment
@ oo not smoko during tho work. Keep open
fllma3 lway from your wolk aloa.
1. Retieve tuel pressure {see page 1 1-10O).
2. Disconnect the connectors trom the fuel iniectors.
3. Disconnect the vacuum hose and fuel return hosa
from the fuel pressure regulatol.
NOTE: Place a r8g or shop towel over the hoses be-
for6 disconnecting them.
4. Loosen the retainer nuts on the Juel rail and harness
holder.
Disconnect the tuel 18il.
Remove the fuel injectors from the intake manifold.
5.
6.
cusHloNRINGReplace.
FUEL
7.
t'.
9.
10.
13.
14.
16.
11.
Slide new cushion rings onto the luel iniectors.
Coat new O-rings with clean engine oil and put them
on the fuel injectors.
Insen the injectors into the tuel rail tirst.
Coat new seal rings with clean engine oil and press
them into the intake manifold.
Install the Juel iniectors and fuel rail assembly in the
intake manilold.
CAUTION: To plovont damage to th€ O-dngs, instsll
tho fuol inioctors in tho fuol r8il first, thon install th€m
in the intaks mEnitold.
12. Align the center line on the connector with the mark
on the fuel rail.
FUEI. RAIL
MABKI'{GS
Install and tighten the retainer nuts
Conn€ct the vacuum hose and tuel retuln hose to
the fuel pressure regulator.
lnstall the connecto.s on the fuel injectors.
Turn the ignition switch ON, but do not operate the
starte.. After the tuel pump runs for approximately
two seconds, the tuel pressure in the fuelline rises.
ReDeat this two or three times, then check whether
there is any fuel leakage
11-105

Connector ldentification and Wire Harness Routing
Roar wiro Harn$s (Hatchbsckl
Connector or
Torminal
Numbor of
CavitiosLocationConnecta tollotos
c501
c502
c503
c504
c505
c506
c507
c508
c509
LStt
c51 1
c512
c513
c514
c515
c516
c517
c5r 8
c519
c520
c521
c522
c523
c524
c525
c526
10'14
10
12
25
2
1
1
2
I
2
20
20
2
6
b
2
2
2
4
Behind left kick panel
Behind left kick panel
Behind dashboard lower cover
Behind dashboard lower cover
Behind dashboard lower cover
Driver's door
Center tloor
Center lloor
Left qusrter panel
Fuel tank
Fuel tsnk
Right quarter panel
Right quarter panel
Left quarter panel
Left quarter panel
Left quarter panel
Left quarter panel
Left side corner of cargo area
L€ft side corner of cargo area
Left side corner of cargo area
Left rear corner of cargo area
Center ot cargo area bulkhead
Right rear cornor oJ cargo area
Center of cargo area bulkhsad
Right side of cargo area
Right side of cargo area
Main wire harness (C4211
Main wire harness (C422)
Under-dash fuse/relay box (C912)
Under-dash fuse/relay box (C91 5)
Dashboard wire harness (C554)
Driver's door wire harness {C6011
Driver's seat belt switch
Palking brake switch
Driver's door switch
Fuel pump
Fuel gauge sending unit
Passenger's door switch
Right rear speaket
Left rear speaker
Noise condenser
Connector C517
Connector C516
Power antenna motor
Cargo area light
Traile. lighting connector
LeJt taillight
License plate lights
Right taillight
Tailgate latch switch
Tailgate wire harness (C752)
Tailgate wire harness (C751)
G501
G502
G503
Behind left kick psnel
Left side of Jloor
Center ot cargo area bulkhead
Body ground, via rear wire
harness
Body ground, via rear wire
harness
Body ground, via rear wire
harness
23-28

Connector ldentification and Wire Harness Routing
Rear Wire HamsEs (S6danl
Connector ol
Torminal
Number ot
Caviti6sLocaiionConnocts toNotos
c501
c503
c504
c505
c506
c507
c508
c509
c510aEt t
c512
L9 IJ
c514
c515
c516
c517
c518
c519
c520
c521
c522
c523
c527
c52A
LCZY
c530
c531
c532
c533
c534
c535
c536
6
1,|
2
1
I
4
4
10
10
12
25
'I
1
a
1
2
2
20
20
2
6
4
4
6
Behind left kick panel
Behind left kick panel
Behind dashboard lower cover
Behind dashboard lower cover
Behind dashboard lowe, cover
Driver's door
Center floor
Center floor
Left B-pillar
Fuel tank
Fuel tank
Right B'pillar
Above right side of trunk
Above left side ot trunk
Left quarter panel
Left quarter panel
Left quarter panel
Left side corner of trunk
Above center of trunk
Left side corner of trunk
Left rear corner of trunk
Right rear corner of trunk
Right rear corner of trunk
Left ,ear door
Right rear door
LeJt quarter panel
LeJt side oJ rear window
Above right side of trunk
Right quarter panel
Right side of rear window
Left side ot trunk lid
Center ot trunk lid
Right side ot trunk lid
Main wire harness (C421)
Main wire harness (C422)
Under-dash tuse/relay box {C912}
Under-dash fuse/relay box (C915)
Dashboard wire harness (C554)
Driver's door wire harness (C6O l )
Driver's seat belt switch
Parking brake switch
Driver's door switch
Fuel pump
Fuel gauge sending unil
Front passenger's door switch
Right rear speaker
Left rear speaker
Noise condenser
Connector C517
Connector C516
Power antenna motor
Trunk light
Trailer lighting conneclor
Left outer taillighr
License plate lights
Right outer taillighr
Left rear door wire harness
(c651)
Right rear door wire harness
(c656)
Lett rear door switch
Rear window delogget (+ )
High mount btake light
Right rear door switch
Rear window defogger (- )
Left inner taillight
T,unk latch switch
Right inner taillight
G501
G502
G503
Behind lett kick panel
Left side of floor
Above center of trunk
Body ground, via rear wire
narness
Body ground, via rear wire
narness
Body ground, via rear wire
narness
23-30