Fuel Pump Inspection - Suzuki AN400 Service Manual

5-8 FUEL SYSTEM AND THROTTLE BODY
• If the fuel pressure is higher than the specification, inspect the
following items:
* Fuel pump check valve
* Pressure regulator
!
* Before removing the special tools, turn the ignition
switch to OFF position and release the fuel pressure
slowly.
* Gasoline is highly flammable and explosive. Keep
heat, spark and flame away.

FUEL PUMP INSPECTION

• Turn the ignition switch ON and check that the fuel pump
operates for few seconds.
• If the fuel pumps motor does not make operating sound,
replace the fuel pump assembly or inspect the fuel pump relay
and tip over sensor.
FUEL DISCHARGE AMOUNT INSPECTION
!
Gasoline is highly flammable and explosive. Keep
heat, spark and flame away.
• Remove the front box. ("7-14)
• Disconnect the fuel delivery pipe from the fuel injector.
• Place the measuring cylinder and insert the fuel delivery pipe
end into the measuring cylinder.
• Disconnect the ECM lead wire coupler.
• With the lead wire's fastener A unlocked, pull out the power
source lead wire (Yellow with red tracer) 1.
• Apply 12 volts to the fuel pump for 10 seconds and measure
the amount of fuel discharged.
• If the pump does not discharge the amount specified, it
means that the fuel pump is defective or that the fuel filter is
clogged.
& Fuel discharge amount:35 ml and more/10 sec.
NOTE:
The battery must be in fully charged condition.
(1.18/1.23 US/lmp oz)/10 sec.
Battery