Fuel Injection System
8.33
FFIt Diagnostics -- Static Tests -- Continued
Testing Electric F uel Pump
NOTE: Do not start the engine during any static
test. Doing so will cause erratic operation until
you shut off the engine.
NOTE: Do not run fuel pump with fuel tank empty
or damage to fuel pump may occur.
T ype 3 to turn the electric fuel pump on. The computer
will display a screen telling you the fuel pump is run-
ning. The fuel pump will run continuously for approxi-
mately 7 seconds. The screen counts down the
amount of time to the end of the test. If you press any
key, the test will stop immediately and return to the
Static Test Menu.
The fuel pump motor makes an audible whirring sound
while running. If you hear the fuel pump running, the
relay and pump are probably okay. You can also use
this procedure to turn the fuel pump on to perform the
pressure and volume test outlined in the service manu-
al.
When you are finished with the Static Test screen,
press the ESCAPE key to return to the Main Menu.
FFIt Diagnostics - CYLINDER DROP TEST
NOTE:
Install the 8 pin power harness back into the EMM prior
to performing the cylinder drop test.
The Cylinder Drop Test is a highly useful diagnostic
tool. It allows you to momentarily shut off fuel to any
one cylinder while the engine is running. To use the
Cylinder Drop Test, you must run the engine with the
laptop attached. Remove the spark checker , and
install all spark plug leads. Run watercraft on trailer in
water, or in test tank.
To start the Cylinder Drop Test, type 3 at the Main
Menu. The computer will display the Cylinder Drop
Test information screen. Read and understand the
screen before continuing.
Press any key to advance to the next screen.
The engine must be running above 2000 RPM. If the
engine is not running, or is below 2000 RPM, a warning
screen will be displayed and the software will not ad-
vance to the Cylinder Drop Testing Menu. If this hap-
pens, start the engine, or press ESCAPE to return to
the Main Menu.
FUEL PUMP TEST IS
RUNNING
TEST WILL STOP IN 6 SECONDS
PRESS ANY KEY TO STOP
S Extract all EMM service codes and make the re-
pairs indicated before using the Cylinder Drop Test
S This test will help you diagnose an engine problem
when the systems or cylinders are not known.
S This test allows you to drop any cylinder as you
run the engine at the RPM where the problem exists.
S If the problem is power loss, engine RPM will not
change when the cylinder is dropped. If the prob-
lem is a misfire, the misfire will stop when the
cylinder is dropped.
PRESS ANY KEY TO CONTINUE
CYLINDER DROP TEST
PRESS ANY KEY TO TRY AGAIN
NOTE!!!
RPM SHOULD BE ABOVE 2000
FOR TEST TO BE EFFECTIVE
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