Fuel Pressure Test - Honda CBR650F Service Manual

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FUEL SYSTEM

FUEL PRESSURE TEST

• Check the fuel tank breather hose on the frame for
pinch or clogs when the fuel tank is lifted.
Disconnect the fuel injector side quick connect fitting
(page 7-4).
Attach the special tools between the fuel feed hose and
fuel pipe of the fuel pump.
TOOLS:
[1] Fuel pressure gauge
[2] Pressure gauge manifold
[3] Hose attachment, 9 mm/9 mm
[4] Hose attachment, 8 mm/9 mm
[5] Attachment joint, 8 mm/9 mm
Temporarily connect the fuel pump 3P (Black)
connector, fuel tank breather hose and battery negative
(–) cable.
Start the engine and let it idle.
Read the fuel pressure.
STANDARD: 343 kPa (3.5 kgf/cm
If the fuel pressure is higher than specified pressure,
replace the fuel pump unit.
If the fuel pressure is lower than specified pressure,
inspect the following:
– Fuel line for leakage
– Fuel tank breather hose (tank side) for pinch or clogs
– Fuel filter for clogs
– Fuel pump (page 7-8)
After inspection, relieve the fuel pressure (page 7-4).
Disconnect the negative (–) cable from the battery
(page 20-5).
Remove the special tools.
Connect the quick connect fitting (page 7-5).
7-6
07406-0040004
07ZAJ-S5A0111
07ZAJ-S5A0120
07ZAJ-S7C0100
07ZAJ-S7C0200
2
, 50 psi)
[5]
[4]
[3]
[2]
[1]