BRP E250DHLSCS, Service Manual

Page: 173 / 396

171
FUEL SYSTEM
FUEL SYSTEM TESTS
8
Pressure Regulator Test
Refer to
Vapor Separator Service
on p. 177 to
remove vapor separator.
Make sure filter is not clogged. Clean or replace
as needed.
Apply oil to valve and connect pressure pump and
hose to the fuel return fitting of vapor separator.
Apply pressure to check regulator operation. The
pressure should open check valve at approxi-
mately 15 psi (103 kPa).
Vapor Separator Vent Check
Monitor the vapor separator vent hose. No fuel or
a trace of fuel is acceptable. Excessive fuel dis-
charge indicates a vapor separator vent malfunc-
tion. Monitor vent for presence of fuel during
testing. Temporarily install clear tubing for moni-
toring. Replace vapor separator if the venting of
fuel is continuous.
Fuel Injector Pressure Test
This test requires Injector Test Fitting kit,
P/N 5005844.
Disconnect the battery cables at the battery.
Relieve fuel system pressure. See
Relieving Fuel
System Pressure
on p. 174.
IMPORTANT:
Perform test with injector
mounted to cylinder head and fittings installed
with manifold retainer.
Use cap and tie strap to seal off outlet fitting. Con-
nect a 0 to 30 psi (0 to 207 kPa) pressure tester to
the inlet fitting. Pressurize the injector to 30 psi
(207 kPa). Pressure must hold for at least five
minutes.
Refer to
FUEL DELIVERY TESTS
on p. 120 for
additional test procedures.
1. Filter
2. Fuel return fitting
3. Pressure regulator
000249
2
1 3
WARNING
Protect against hazardous fuel spray.
Before starting any fuel system service,
carefully relieve fuel system pressure.
1. Outlet fitting
2. Inlet fitting
002379
1
2