Fuel Pressure Measurement - Yamaha WaveRunner FX140 Service Manual

FUEL
2
1
FUEL INJECTION SYSTEM

Fuel pressure measurement

1. Disconnect:
• Fuel hose
Refer to "Fuel hose disconnection".
2. Install:
• Fuel pressure gauge adapter 1
• Fuel pressure gauge 2
Fuel pressure gauge adapter:
YW-06842/90890-06842
Fuel pressure gauge:
YB-06766/90890-06786
NOTE:
To connect the fuel pressure gauge adapter,
follow the procedures for connecting a fuel
hose. (Refer to "Fuel hose connection".)
3. Start the engine and arrow it to warm up
for several minutes.
4. Measure:
• Fuel pressure
Out of specification → Replace the fuel
pump module.
Fuel pressure:
310–330 kPa
(3.1–3.3 kgf/cm
5. Remove:
• Fuel pressure gauge
• Fuel pressure gauge adapter
NOTE:
To disconnect the fuel pressure gauge
adapter, follow the procedures for disconnect-
ing a fuel hose. (Refer to "Fuel hose discon-
nection".)
6. Connect:
• Fuel hose
Refer to "Fuel hose connection".
4-26
E
2
, 45–47 psi)