Section 05 FUEL SYSTEM
Subsection 01 (FUEL TANK AND FUEL PUMP)
Crank or start engine
and observe fuel pressure.
The fuel pressure should be the same as above.
If pressure is good, fuel pump and pressure regu-
lator are working adequately.
A rapid pressure drop indicates leakage either
from the fuel rail or from the fuel pump check
valve. Check fuel rail for leaks. If it occurs while
installing safety lanyard on DESS and fuel rail is
not leaking, then replace fuel pump.
A slow pressure drop indicates leakage either
from the fuel injector or from the fuel pressure
regulator. Check fuel injector for leaks (see be-
low). If it is not leaking then replace fuel pump
module.
Release fuel pressure in the system using
B.U.D.S. Look in the
Activation
tab.
Remove pressure gauge and reinstall fuel hose.
WARNING
Wipe off any fuel spillage in the bilge. Fu-
el is flammable and explosive under certain
conditions. Always work in a well ventilated
area.
Reinstall removed parts.
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