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L510023-07
Stage 2 - Operational / Sea-Trial Inspection
Boat-in-the-Water Tests
IMPORTANT: Engine alignment MUST BE CHECKED at this time, with the boat
in the water, fuel tanks fi lled, and with a normal load onboard.
1. Test Equipment Connection
• With the boat in the water and secured in her slip, locate the Data Link
Connector (DLC) on the engine and connect the Diacom cable from your
computer to the engine.
Note: On twin engine applications, Diacom can only read the engine data from
the engine it is connected to. You must disconnect from the current engine
and reconnect to the other engine when you are instructed.
Verify that the Master/Slave Wiring Harness is installed between engine #1 and
engine #2’s Engine Wiring Harnesses.
• Install the fuel pressure gauge onto the fuel rail or FCC fuel pressure fi tting.
(NOTE: For twin engine applications, you will be instructed on when to
connect the fuel pressure gauge to the second engine.) Readings should
be made with the gauge positioned at the same height as the fi tting to which
it is attached. Consult the Master Engine Specifi cation Sheet for the proper
pressures for the engine being tested.
Check the compliance box.
2. Priming the Fuel System and Check for Fuel Leaks
• Turn the Ignition Switch to the ON position (for the engine that the fuel
pressure gauge is currently connected to.) to allow the fuel pumps to run until
they shut off, then turn the Ignition Switch to the OFF position (Ignition switch
must remain in the OFF position for a minimum of 5 seconds in order to reset
the engine’s ECM and allow another pump cycle to occur.). This procedure
may have to be repeated 1-3 times to prime the fuel system. Repeat as
necessary to build fuel pressure to the specifi cation of this engine. Check for
fuel leaks at the fuel pressure gauge connection and all fuel fi ttings. Correct
any leaks before proceeding.
• When the fuel pressure is at the specifi ed level, stop cycling the pumps and
allow the engine to sit for one minute while observing the fuel pressure reading
on fuel gauge. Pressure must remain constant when the fuel pumps are not
operating.
NOTE: While the pumps are operating fuel pressure should be within the
Master Engine Specifi cation range for WOT pressure; after the pumps cut
off pressure will drop slightly but remain constant. If proper pressure is
not displayed or does not remain constant, correct this condition before
proceeding.
• Check for signs of fuel in the engine compartment and all fuel lines for leaks
before starting the engine. Correct any defi ciency prior to proceeding.
• For twin engine applications: Relieve the fuel pressure and disconnect
the fuel gauge from engine #1, connect the fuel gauge to engine #2 and
repeat the priming and fuel leak check for engine #2.
Check the compliance box.
PORT STBD
PORT STBD
WARNING
DO NOT leave the helm unattended while performing any tests.
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