Pressure Regulator Test; Vapor Separator Vent Check; Fuel Injector Pressure Test - BRP E250DHLSCS Service Manual

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).
3
1. Filter
2. Fuel return fitting
3. Pressure regulator

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.
Protect against hazardous fuel spray.
Before starting any fuel system service,
carefully relieve fuel system pressure.
IMPORTANT:
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.
2
2
1
000249
1. Outlet fitting
2. Inlet fitting
Refer to FUEL DELIVERY TESTS on p. 120 for
additional test procedures.
FUEL SYSTEM
FUEL SYSTEM TESTS
WARNING
Perform test with injector
1 8
002379
171