FUEL
Fuel system
4-7
60C5D11
Checking the fuel pump
1. Install the special service tool onto the
fuel pump as shown.
2. Apply the specified pressure to each fuel
pump port.
3. If air flow is reversed, check the dia-
phragm for tears and the valves for
cracks. Replace if necessary.
CAUTION:
Do not over pressurize the fuel pump, oth-
erwise excessive pressure may cause air
leakage.
NOTE:
• Make sure that air does not escape from
the opposite side of the fuel pump.
• To eliminate any gaps between the fuel
pump valves and the fuel pump body 2, and
to ensure a better seal, make sure that the
inside of the fuel pump is moist with gaso-
line.
Vacuum/pressure pump gauge set:
90890-06756
S60C4050
Fuel pump pressure
a
:
50 kPa (0.5 kgf/cm
2
, 7.1 psi)
Fuel pump negative pressure
b
:
30 kPa (0.3 kgf/cm
2
, 4.3 psi)
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