Fuel Pressure Test - Honda 2010 CRF250R Service Manual

FUEL SYSTEM (PGM-FI)
FUEL PRESSURE TEST
NOTE:
Make sure there is one liter or more of fuel remaining in
the fuel tank be fore starting fuel pressure test.
Relieve the fuel pressure (page 5-30).
Disconnect the quick connect fitting from the fuel pump
side (page 5-31),
Attach the fuel pressure gauge, hoses, aUachment joint
and manifold between the fuel pump and quick
connector.
TOOLS :
(1): Fuel pressure gauge,
0-100psi
(2): Pressure gauge manifold
(3): Hose attachment,
9 mm /9
mm
(4): Hose attachment,
8mml9mrn
07406-0040004
07ZAJ-S5A0111
07ZAJ-SSA0120
07ZAJ-S7C0100
(5); Attachment joint, 07ZAJ..s7C0200
Bmm/9mm
TOOLS, U.S.A . only :
Fuel pressure gauge, 0 - 100 psi 07406-0040008
Fuel pressure manifold hose 07AMJ·HW3A100
Adaptor, male 07AAJ -S6MA300
Adaptor, female 07AAJ-S6MA500
Connect the 12 V battery to the fuel pump sub harness
(page
5-12).
Support the fuel tank in an upright position onto the
frame then remove the hose damp from the breather
hose.
Turn the ·PUMp· selector switch ON .
Read the fuel pressure.
Standard: 333 - 360 kPa (3.4 - 3.7
kgflcm ~.
48 - 52
ps i)
If the fuel pressure is higher than specified . replace the
fuel pump assembly (faulty fuel pump or fuel pressure
regulator).
If the fuel pressure is lower than specified, inspect the
following:
- Fuel line leaking
- Restricted fuel hose or fuel tank breather hose
- Fuel pump (page 5-37)
- Clogged fuel strainer
- '10: (page 5-39)
- After '10: (page 5-41)
Wrap
a
shop lowel
After inspection , disconnect the battery harness.
around/he
attachmanllo soak
up any spilled fuel.
5-36
Relieve the fuel pressure by starting the engine and let
it idle until it stalls (page 5-30).
Remove the fuel pressure gauge, hose attachments,
attachment joint and manifold.
Connect the quick connect filling to the fuel pump side
(page 5-33).
CLAMP
(4 )
f
FUEL