Filter
Top Products
FUEL SYSTEM (DFI) 3-75
Fuel Line
Fuel Pressure Inspection
NOTE
○
This inspection can determine which trouble t he DFI
system
has, mechanical or electrical trouble.
○
It is preferable to measure the fuel pressure while run-
ning the motorcycle just when trouble occurred in order
to kno
w symptom well.
○
Be sure the battery is fully charged.
•
Remove the fuel tank (see Fuel Tank Removal).
•
Be sure to place a piece of cloth around the pum p outlet
pipe and the delivery pipe.
•
Remove the fuel pump outlet hose [A].
Front [B]
WARNING
Be prepared for fuel spillage; any spilled fuel must
be completely wiped up immediately.
When the fuel hose is disconnected, fuel spills out
from the hose and the pipe because of residual
pressure. Cover the hose connection with a piece
of clean cloth to prevent fuel spillage.
•
Install the fuel pressure gauge adapter [A] between the
fuel pum p outlet pipe [B] and the delivery pipe [C].
•
Connect the pressure gauge [D] to the fuel pressure
gauge adapter (right side view).
Special Tools - Oil Pressure Gauge: 57001–125
Fuel Pressure Gauge Adapter: 57001–1417
WARNING
Do not try to start the engine w ith the fuel hoses
disconnected.
•
Temporarily, install the fuel tank [E]
Clamps [F]
•
Turn the ignition switch ON. The fuel pump will turn for 3
seconds, and then stop.
CAUTION
Do not drive the fuel pump without the fuel in the
fuel tank.
•
Measure the fuel pressure with the engine stopped.
Fuel Pressure
Right after Ignition switch ON, with pump running:
Standard: 310 kPa (3.2 kgf/cm², 44 psi)
After 3 seconds from Ignition switch ON,
with pump stopped:
Standard: 290 kPa (3.0 kgf/cm², 43 psi) ,
residual fuel pressure)
The system should hold the residual
pressure about 30 seconds.