1999 HONDA CR-V fuel pressure

Fuel Injectors
R6placomoni
1. Relieve the fuel pressure (see page 11-178).
2. Remove the resonato. chamber ('99 - 00 models).
O.RINGBeplace.
Disconnect the connectors from the fuel injectors, and disconnect the IAT sensor 2P connector ('97 - 98 models) and
EVAP purge control solenoid valve 2P conn€ctor ('97 - 98 models),
Disconnect the PCV valve and the vacuum hose from the fuel pressure regulator.
Place a shop towel over the fuel return hose, then disconnect it from the fuel pressure regulator.
Remove the retainer nuts on the fuel rail.
Disconnect the fuel rail.
7, Remove the fuel injectors from the intake manifold.
'97 - 98 model3:
EVAP PURGE CONTROLSOLENOID VALVE 2P CONNECTORIAT SENSOR
FUEL PULSATION2P CONNECTOR
12 N.m{1.2 kgt'm,8.7 tbtft)
FUELPRESSUREREGULATOR
O.RING
FUELPRESSUREREGULATOR
CUSHION
O.RINGReplace.
CUSHIONRINGReplace.
SEALRINGReplace.
Replace.
SEALRINGReplace.
S
11-179
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Fuel Supply System
Fuel Injectors {cont'dl
8. Slide new cushion rings onto the fuel injectors.
9, Coat newO-ringswith clean engine oil,and putthem onthefuel iniectors.
'10. lnsert the fuel injectors into the fuel rail first.
11. Coatnewseal ringswithclean engineoil,and press them into the intake manifold
12. To prevent damage to the O-rings, install the fuel injectors in the fuel rail first, then install them in the intake mani-
fold.
FUEL RAIL
The ill!stration shows'97 -98 models,'99 - 00 modelsare similar.
13. lnstall and tighten the retainer nuts.
14. Connect the vacuum hoses and fuel return hose to the fuel pressure regulator.
15. Connect the PCV valve.
16. Connect the connectors to the fuel injectors, the IAT sensor ('97 - 98 models), and the EVAP purge control solenoid
valve {'97 - 98 models).
Coat a new O-ring with clean engine oil, and install the resonator chamber ('99 - 00 models).
Turn the ignition switch ON (ll), but do not operate the starter. After the fuel pump runs for approximately two seconds,
the fuef pressure in the fuel line rises. Repeat this two or three times, then check whether there is any fuel leakage.
11.
18.
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Fuel Pressure Regulator
Tesiing
1. Attach the special tool and the 12 mm fuel pressure
adapter bolt to the fuel filter (see page 1l-178)
2. Start the engine.
Prasgure should be:'97 - 98 models;
260 - 310 kPa (2.7 - 3.2 kgl/cm',38 -,16 psi)'9!t - 00 models:
27O - 32o kPa l2-8 - 3.3 kgf/cm', 40 - /l7 psil
(with the lugl pressure rsgulator vacuum hose dis-
connested and pinched)
FUELPRESSUREGAUGE07406 - 0040001
FUEL PRESSURENEGULATOR
The illustration shows'97 - 98 models,'99 -00 modelsare similar.
Reconnect the vacuum hose to the fuel pressure
regulalor.
Check that the fuel pressure rises when the vacuum
hose from the fuel pressure regulator is disconnect-
ed agarn.
lf the fuel pressure did not rise, replace the fuel
pressure regulator.
4.
CLAMP
Replacement
'1. Place a shop towel under the fuel pressure regula-
tor, then relieve fuel pressure (see page 11-1781.
2. Disconnect the vacuum hose and fuel return hose.
3. Remove the two 6 mm retainer bolts and the fuel
pressure reguralor.
12 N.m(1.2 kgf.m,8.7 tbf.ft)
The illustration shows'97 - 98 models, '99 00 models
are similar.
Apply clean engine oil to a new O-ring. and carefully
install it into its proper position.
Install the fuel pressure regulator in the reverse
order of removal,
Replace.
1 1-181
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Fuel Supply System
Fuel Filter
Replacamont
. Do not smoke whilo working on tuol syslom,Keep open flame away from your work area.. While rsplscing ths fuolfihor. bo careful to ko€p a safedistanca betweon baftsry tarminals and any tools,
The fuel filter should be replaced whenever the fuel Dres-sure drops below the specified value* with the fuel pres-
sure regulator vacuum hose disconnected and pinchedl
after making sure that the fuel pump and the fuel pres-
sure regulator are OK.
i: '97 - 98 modelsi 260 - 310 kPa 12.7 - 3.2 kgllcm2,3g -
46 psil'99 - 00 mod6fs: 270 - 320 kP8 12.8 - 3.2 kgilcm2, 40 -
il7psi)
1, Place a shop towel under and around the fuel filter.
2. Relieve fuel pressure (see page l1-l7B).
3. Remove the engine wire harness bracket and power
steering feed hose clamp.
4. Remove the banjo bolt and the fuel feed pipe whilesupporting the fuel filter with another wrench. assnown.
Remove the fuelfilter clamp and fuel filter,
Install the new fuel filter in the reverse orde. ofremoval, and note these items:
. When assembling, use new washers as shown.. Clean the flared joint of high pressure nosesthoroughly before reconnecting them.
11-182
12 mmSEAUNGBOLT33 hl.m
l3.a kgt m,25 lbt frl
9.8 N.|n11.0 kgf'm,t.2 tbt.ftl
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Fuel Pump
Testing
lf you suspect a problem with the fuel pump, check that
the fuel pump actually runs; when it is oN (ll), you will
hear some noise if you hold your ear to the fuel fill port
with the fuel fill cap removed. The fuel pump should run
for two seconds when ignition switch is first turned ON (ll).
lf the fuel pump does not make noise, check it as follows:
1. Fold the left rear seat cushion forward, and remove
the base frame cover (see section 20).
2, Remove the access panel from the floor.
3. Make sure the ignition switch is OFF, then discon-
nect the fuel pumP 5P connector.
4. Connect the PGM-FI main relay 7P connector termr-
nal No. 4 and No, 5 with a jumper wire.
PGM.FI MAINRELAY 7P CONNECTOR (Cit:}2l
I'TtlJilt f -r'-r ll.l5l517l,frTt-,at\FUEL pUMp Lr- . tcl tyEL/cRNl
rYEL/cRNl IIJUMPER Wir€ side of
WIRE female terminals
5. Check that battery voltage is available between the
fuel pump 5P connector terminal No. 4 and body
ground when the ignition switch is turned ON (ll).
FUEL PUMP 5P CONNECTOR {C562}
12
3a5
lf battery voltage is available, check the fuel
pump ground. lf the ground is OK, replace the
fuel oumo.
lf there is no voltage, check the wire harness (see
page 11-188).
FUEL PUMP(YEL/GRNI
wire side offemale terminals
Raplac6mont
1. Fold the left rear seat cushion forward, and remove
the base frame cover (see section 20).
2. Remove the access panel from the floor.
3, Relieve the fuel pressure (see page 11-178).
4. Disconnect the fuel lines.
5. Disconnect the 5P connector from the fuel pump.
6. Remove the fuel pump mounting nuts.
7. Remove the fuel pump from the fuel tank.
Install the fuel pump in the reverse order of
removal.
8.
11-183
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Fuel Gauge Sending Unit
Tgsting
@ Do not smoke while working on tho fuel
systom. Keop open flamo 8waY from your work araa.
1. Fold the left rear seat cushion forward, and remove
the base frame cover (see section 20).
2. Remove the access panel.
3. With the ignition switch OFF. disconnect the 5P con-
nector from the fuel pump.
4. Relieve fuel pressure (see page 11-178).
5. Disconnect the fuel lines.
6. Remove the fuel pump,
7. Measure the resistance between the No. 2 and No. 5
terminals at E (EMPTY), 1/2 (HALF FULL) and F (FULL)
by moving the float.
lf you do not get the above readings, replace the
fuel pump.
11-185
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Fuel Tank
Replacement
1. Relieve the fuel pressure (see page 11-178).
2. Fold the left rear seat cushion forward, and remove the base frame cover {see section 20).
3. Remove the access panel from the floor.
4. Disconnect the 5P connector 1C562) and 6P connector (C580) ('98-00 models)'
5. Disconnect the fuel return hose and quick-connect fittings {see page 11-175}
6. Jack up the vehicle, and support it with jackstands.
7. Remove the middle floor beam.
8. Remove the drain bolt, and drain the fuel into an approved contaaner.
g. Disconnect the hoses (see page 11-173, 174). slide back the clamps. then twist hoses as you pull, to avoid damaging
them.
10. Place a jack, or other suppon, under the tank
11. Remove the strap nuts, and let the straps fall free
12. Remove the fuel tank. lf it sticks on the u ndercoat applied to its mount, carefu lly pry it off the mount,
'13. lnstallthe drain bolt with a new washer, then coat the drain bolt with Noxrust 1248'
Allow the Noxrust to dry for 20 minutes.
14. Install parts in the reverse order of removal.
'97 modol:AOCESS PANEL
CONNECTOR
@ Do not smoke while working on fuol systam Keep open flame away from your work area'
DRAIN EOLT49 N.m15.0 kgf'm,36 rbt frl
(cont'd)
1 1-191
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EVAP PURGE CONTROL SOLENOID VALVE DUTY CONTROLLED AFTER
STARTING ENGINE
ENGINE COOLANT TEMPERATURE ABOVE 154"F (68'C)
Evaporative Emission (EVAP) Controls
Description:
The evaporative emission controls are designed to minimize the amount of fuel vapor escaping to the atmosphere. The
system consists of the following components:
A. Evaporative Emission (EVAPI Control Canister
An EVAP control canister is used for the temporary storage of fuel vapor until the luel vapor can be purged from the
EVAP control canister into the enqine and burned.
B. Vapor Purge ConirolSystem
EVAP control canister purging is accomplished by drawing fresh air through the EVAP control canister and into a pon
on the intake manifold. The purging vacuum is controlled by the EVAP purge control solenoid valve.
C. Fuel Tank Vapor Control System
When fuel vapor pressure in the fuel tank is higher than the set value of the EVAP two way valve, the valve opens and
regulates the flow ot fuel vapor to the EVAP control canister.
'97 model:
EVAPPURGECONTROL
VALVEFromNo. 15BLK/ /ALTERNATORYEL I sP SENSOR r7.s At(in the under-dashfuse/relay box)
VARIOUSSENSORFEESH AIF
BLK
I
FUEI- TANK
(cont'd)
11-203
INTAKE MANIFOLD
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