BRP Evinrude E-Tec Series Service Manual page 189

Circulation Pump Resistance Test
Disconnect the battery cables at the battery.
Use a digital multimeter to measure the fuel pump
circuit and coil resistance.
Fuel Pump Resistance
3 Ω @ 77°F (25°C)
Lift Pump Pressure Test
Install a 0 to 15 psi (0 to 103 kPa) Fuel Pressure
Gauge, P/N 5006397 or equivalent, to the lower
fuel pressure test fitting.
2
1. Fuel pressure gauge
2. Test fitting
Prime the fuel system and check for leaks. START
outboard and run at idle speed. Hold gauge level
with inlet fitting and monitor gauge for pressure
reading.
Pressure should stabilize and gauge must not
indicate less than 3 psi (21 kPa).
Results:
Normal pressure
Perform the Lift Pump Vacuum Test on
•
p. 187. Make certain no air leaks or restrictions
exist in the fuel supply hose or boat fuel system.
Low pressure
Check pulse hoses and fittings for restrictions.
•
Perform the Lift Pump Vacuum Test on
•
p. 187. Make sure no air leaks or restrictions
exist in the fuel supply hose or boat fuel system.
Check fuel flow through fuel lift pump. Use fuel
•
primer bulb to force fuel through pump.
No pressure
Check pulse hoses and fittings restrictions.
•
Check fuel flow through fuel lift pump. Use fuel
•
primer or primer bulb to force fuel through
pump.
Momentarily prime or squeeze primer bulb to
•
check gauge operation.
005438
Check pulse hose and fittings for restrictions.
•
Lift Pump Vacuum Test
Confirm fuel supply to the fuel lift pump.
Temporarily install a vacuum gauge, T-fitting, and
8 in. (20.3 cm) of clear vinyl hose between the fuel
supply hose and fuel lift pump (inlet). Secure con-
nections with tie straps to prevent fuel or air leaks.
1
IMPORTANT:
ual fuel primer, or electric fuel pump primer to
restart outboard. A positive pressure in the fuel
supply could damage some vacuum gauges.
005439
FUEL SYSTEM
FUEL COMPONENT TESTS
Do not use fuel primer bulb, man-
7
000243
187