Circulation Pump Resistance Test; Lift Pump Pressure Test - BRP Evinrude E-TEC Series Service Manual

FUEL SYSTEM
FUEL SYSTEM TESTS

Circulation Pump Resistance Test

Disconnect the battery cables at the battery.
Use a digital multimeter with appropriate adapter
leads to measure the fuel pump circuit and coil
resistance.
Fuel Pump Resistance
2 to 8  @ 77°F (25°C)

Lift Pump Pressure Test

Install a 0 to 15 psi (0 to 103 kPa) Fuel Pressure
Gauge. Tee into the fuel supply line before the fuel
filter.
2
1. Fuel pressure gauge
2. Tee fitting
128
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 at a reading greater
than 2 psi (14 kPa).
Results:
Normal pressure:
•
Perform the Lift Pump Vacuum Test on p. 129.
Make sure 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. 129.
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.
007417
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.
•
Check pulse hose and fittings for restrictions.
1
007418