Isuzu 1999 RODEO Workshop Manual page 596

Fuel Pump Flow Test
If reduction of fuel supply is suspected, perform the
following checks.
1. Make sure that there is fuel in the tank.
2. With the engine running, check the fuel feed pipe and
hose from fuel tank to injector for evidence of
leakage. Retighten, if pipe or hose connection is
loose. Also, check pipes and hoses for squashing or
clogging.
3. Insert the hose from fuel feed pipe into a clean
container, and check for fuel pump flow rate.
4. Connect the pump relay terminals with a jumper
wire(1) as shown and start the fuel pump to measure
delivery.
CAUTION: Never generate sparks when connecting
a jumper wire.
Delivery
15 seconds
If the measure value is out of standard, conduct the
pressure test.
Pressure test
For the pressure test to the fuel system, see Section 6E
"Fuel Control System".
140RW015
Delivery
0.38 liters minimum
ENGINE FUEL (X22SE 2.2L)
6C–5