Fast 30400-KIT-EZ-EF Instructions Manual - page 43
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off for the final time and the throttle can be released. The “Next/Confirm” button will become
available.
NOTE: The full throttle procedure is meant to be performed with the engine NOT running!
Fuel System Test
The fuel system test procedure differs slightly depending on the fuel system selected. Shown below
are the two types of tests that may run. These tests are meant to be performed with the engine not
running.
The Fuel System Test screen can also be accessed from outside the Setup Wizard by selecting Fuel
System from the Advanced menu. After confirming the fuel system settings, you will be taken to the
appropriate Fuel System Test screen.
Return
Fuel
System
Returnless
Fuel
System
Return Fuel System
The first test is for return style fuel systems that use a mechanical fuel pressure regulator and a return
line back to the fuel tank. The target fuel pressure will be shown along with current fuel pressure.
Pressing the “START” button will engage the fuel pump. Pressing the “STOP” button will turn the
pump off. For safety, the fuel pump will automatically turn off after approximately 10 seconds. Use
this time to adjust the regulator and ensure that current fuel pressure is equal to target fuel pressure.
Turn the adjustment screw on the top of the regulator clockwise to raise the pressure or counter
clockwise to lower it. Be sure to tighten down the jam nut when finished adjusting the fuel pressure.
The test can be re-run as necessary by pressing the “START” button again.
NOTE: If the pump does not come on during this test (or comes on but only for an instant) and
if the blue CRANK/DIAG LED on the ECU is flashing rapidly, it is likely that a safety built
into the ECU has shut the pump down in response to higher than expected (greater than 75 psi)
fuel pressure. The fuel pump is disabled in the event that a return-style fuel system (which runs
the pump wide open) was selected in the hand-held when there is no mechanical fuel pressure
regulator and return line actually installed in the vehicle. This prevents the pump from straining
against a closed system and building excess pressure.