Fuel Pressure Normalization; Fuel Pressure Test - Honda CRF1000 Shop Manual

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FUEL PRESSURE NORMALIZATION

1. Connect the fuel pump unit 3P (Black) connector [1].
Connect the battery negative (–) cable (page 21-5).
2. Turn the ignition switch ON and engine stop switch
" ".
The fuel pump will run for about 2 seconds and fuel
pressure will rise.
• Do not start the engine.
3. Turn the ignition switch OFF.
4. Repeat 2 or 3 times, and check that there is no
leakage in the fuel supply system.
5. Install the fuel tank (page 7-6).

FUEL PRESSURE TEST

Relieve the fuel pressure (page 7-4).
Disconnect the quick connect fitting (fuel pump side)
(page 7-4).
Attach the special tools between the fuel pump joint and
fuel feed hose.
TOOLS:
Fuel pressure gauge [1]
Pressure gauge attachment set [2] 070MJ-K260100
Hose attachment, 6 mm/9 mm [3]
Hose attachment, 8 mm/9 mm [4]
Attachment joint, 8 mm/9 mm [5]
Attachment joint, 6 mm/9 mm [6]
Temporarily connect the battery negative (–) cable and
fuel pump unit 3P (Black) connector.
Start the engine and let it idle.
Read the fuel pressure.
Standard:
324 – 367 kPa (3.3 – 3.7 kgf/cm
If the fuel pressure is higher than specified, replace the
fuel pump unit.
If the fuel pressure is lower than specified, inspect the
following:
– Fuel line leaking
– Pinched or clogged fuel hose or fuel tank breather
hose
– Fuel pump unit (page 7-7)
After inspection, relieve the fuel pressure (page 7-4).
Remove the special tools.
Connect the quick connect fitting (page 7-4).
07406-0040004
[3]
07ZAJ-S5A0130
07ZAJ-S7C0100
07ZAJ-S7C0200
07ZAJ-S5A0150
2 Fuel feed
, 47 – 53 psi)
hose side
FUEL SYSTEM
[1]
[1]
[2]
[5]
Fuel pump
side
[6]
[4]
7-5