Bleeding The Fuel System - Westerbeke SBEG Series Operator's Manual

FUEL SYSTEM
BLEEDING THE FUEL SYSTEM
If the engine cranks but fails to start or starts and then shuts
down, there may
be
air in the fuel system. Use the following
procedure to purge air from the fuel system.
1. Connect a fuel pressure gauge kit (Snap-On MT 3378) or
equivalent to the Schrader port on the fuel cell.
A
CAUTION:
Follow the manuiactutelS
Instructions fOI the safe
USB
of the pressure gauge
kit when purging high pressure fuel systems.
2. While holding the STOP switch in the prime (depress)
position, bleed the air from the fuel cell. The fuel cell is
purged when no air bubbles are visible escaping from the
bleed line.
3. Remove the pressure gauge kit from the fuel cell and
connect it to the Schrader valve at the throttle.
4. Open the valve on the fuel pressure gauge line. Do not
prime system without the fuel gauge purge valve open or
air can
be
forced back into fuel cell. If this happens,
repeat steps 1, 2, and 3 to remove trapped air from the
fuel cell.
FUEL CELL
(FUEL PUMP/FILTER)
FUEL FILTER
5. Repeat step 2, this time purging the air completely from
the throttle body. The pressure should
be
40psi in the
throttle body after purging the system.
NOTE:
The system can develop 40psi without being fully
purged. The system is only fully purged when no bubbles
are visible in the purge line.
6. Remove the pressure gauge set, and cap all Schrader
valves.
7. Insure that all wire connections are secure and that there
are no leaks in the fuel system.
__
==~FUEL
INJECTOR
-'~omEBODY
.§
._--==----'--
PRESSURE
GAUGE
"SWAP:W-ra01.~PF1fJV/lJES
AN
EXCELLENT PRESSURE GAUGE KIT
FOR PRESSURE TESTING AND
BLEEDING SCHRADER TEST PORTS
BLEEDING THE FUEL SYSTEM
~
WESTERBEKE
Engines
& Generators
15A