Owners manual

2 INSTALLATION INSTRUCTIONS
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FUEL
FILTER
FUEL
PUMP
FUEL TANK
CONNECT ORANGE WIRE FROM
ATOMIC TO RED TERMINAL (12V)
-6AN
CAP AND BANJO
FITTING
SUPPLIED
CONNECT
SUPPLIED
GROUND WIRE
TO BLUE
TERMINAL
(GROUND)
-8AN FITTING
SUPPLIED
1/2” ID FUEL LINE
REQUIRED TO THE
TANK (NOT SUPPLIED)
SUPPLIED 3/8”
FUEL LINE
CLAMP
CLAMP
Figure 2 Atomic Returnless Fuel System.
NOTE: DO NOT USE
TUBING (HARD FUEL
LINES) WITH THE
ATOMIC EFI SYSTEM.
CORRECT RETURNLESS (PWM) INSTALLATION
3. Install the supplied ground wire to the Blue terminal of the pump. Note that the terminals are different
sizes. Retaining nuts and are supplied (6mm for positive, 5mm for the negative post). Connect the
ground wire to a clean, bare metal ground source.
4. Connect the Orange wire from the Atomic to the + terminal of pump. This terminal uses the 6mm nut.
5. Mount the pump using the supplied clamps and hardware. Also find a suitable location and mount the
fuel filter.
6. Install the 3/8” hose to the pump using the supplied push-lock AN fitting. It is recommended to use
dish soap to push the hose over the fitting. Make sure the line is pushed all the way to the end of the
fitting. Do Not Use a Clamp on the push lock fittings.
Be sure to route all fuel lines clear of any moving suspension or drive train components, and
any exhaust components! Protect fuel lines from abrasion and road obstructions or debris.
7. Continue the line to either inlet of the Atomic throttle body using the -6 fittings supplied with the Atomic.
Failure to follow the above may result in fuel leakage, bursting of the fuel lines, poor vehicle
performance and/or decreased fuel pump life! Improper installation will void all warranties for
this product!
DANGER
CAUTION
WARNING
NOTICE
While performing the following steps, if any fuel leaks are detected,
immediately turn the ignition to OFF, remove any spilled fuel and repair the
leak(s) before proceeding!
DANGER
CAUTION
WARNING
NOTICE
8. Turn the ignition to ON without starting the engine, allow the pump to run for several seconds and
check the fuel pressure. If there is no pressure, turn the ignition to OFF, wait one minute, then turn the
ignition to ON and recheck the pressure. Repeat this ignition OFF and ON procedure until the gauge
registers pressure or you detect a fuel leak. If no pressure is registered on the gauge after running the
pump for several seconds and you have found no leaks, check all fuel and electrical connections to
determine the cause.