3-104 FUEL SYSTEM (DFI)
Fuel Pressure Inspection
This inspection can determine which trouble the DFI
system has, mechanical or electrical trouble.
It is preferable to measure the fuel pressure while run-
ning the motorcycle when the trouble has occurred in
order to know symptom well.
Be sure the battery is fully charged.
Remove the fuel tank (see Fuel Tank Removal).
Pull the fuel hose joint out of the delivery pipe (see Fuel
Fuel is flammable and explosive under certain con-
ditions and can cause severe burns. Be prepared
for fuel spillage; any spilled fuel must be completely
wiped up immediately. When the fuel hose is dis-
connected, fuel spills out from the hose and the
pipe. Cover the hose connection with a clean shop
towel to prevent fuel spillage.
Install the fuel pressure gauge adapter [A] between the
fuel tank outlet pipe [B] and the inlet pipe [C] to the deliv-
ery joint [D].
Put the fuel pressure gauge adapter outside the frame.
Connect the pressure gauge [E] to the fuel pressure
Fuel Tank [F]
Fuel Pump [G]
→: Fuel Flow
Special Tools - Oil Pressure Gauge: 57001-125
Fuel Pressure Gauge Adapter: 57001-1593
Fuel Hose: 57001-1607
Fuel is extremely flammable and can be explosive
under certain conditions resulting in serious injury
Do not try to start the engine with the fuel hoses
Turn the ignition switch ON. The fuel pump will turn for 3
seconds, and then stop.
Turn the ignition switch ON and inspect the fuel line
leakage after installing the special tools.
Do not drive the fuel pump 3 seconds or more with-
out the fuel in the fuel tank. If the fuel pump is driven
without the fuel, it may be damaged.