Measuring The Fuel Pressure - SELVA MARINE Grey Whale 200 EFI Service Manual

3
NOTE:
Cover the quick connector, fuel rail, and
vapor separator with a plastic bag to prevent
damage and to protect them from dirt.

Measuring the fuel pressure

1. Reduce the fuel pressure.
NOTE:
To reduce the fuel pressure, see Chapter 4,
"Reducing the fuel pressure."
2. Disconnect the quick connector from the
vapor separator.
NOTE:
To disconnect the quick connector, see
Chapter 4, "Disconnecting the quick connec-
tor."
3. Connect the fuel pressure gauge adapter
B 1 between the quick connector and
vapor separator.
4. Connect the fuel pressure gauge 2 to
fuel pressure gauge adapter B 1.
6AL3J11
2
S6P24280
WARNING
• Gently screw in the gauge until it is
firmly connected to prevent fuel from
leaking out.
• Before measuring the fuel pressure,
make sure that the drain screw is tight-
ened securely.
• Do not loosen the drain screw while
measuring the fuel pressure. Loosening
the drain screw can cause fuel to spray
out creating a fire hazard.
5. Turn the engine start switch to "ON," and
then measure the fuel pressure within 5
seconds.
NOTE:
• The fuel pressure will decrease 5 seconds
after the engine start switch is turned to
"ON" because the high-pressure fuel pump
will stop.
• The high-pressure fuel pump does not
operate when the engine start switch is
turned to "ON" again within 10 seconds
after turning the switch to "OFF."
1
Fuel pressure gauge adapter B 1:
90890-06942
Fuel pressure gauge 2:
90890-06786
Fuel pressure (reference data):
2
300 kPa (3.0 kgf/cm , 43.5 psi)
Fuel system
1
PORT
2
3
S6P24290E
4
5
6
7
8
9
4-6