10. Loosen the ¼” jam nut on the idle pressure adjustment setscrew located on the FRONT of the
regulator, carefully thread the set screw all the way in and tighten the jam nut.
11. Ensure that any spilled gasoline and any gasoline soaked shop towels are cleaned up and
removed from the vicinity of the vehicle!
12. Reconnect the battery and prime the fuel system until the fuel pressure gauge registers fuel pressure,
WITHOUT
starting the car.
13. With the fuel pressure gauge registering fuel system pressure, check for fuel leaks from and
around the Aeromotive regulator and all fuel lines and connections! If any fuel leaks are
found, remove any spilled fuel and repair the leak before proceeding!
14. Once the fuel pressure gauge registers fuel system pressure and there are no fuel leaks, start the
engine and hold at 2500-3000 RPM and adjust the regulator to the desired operating fuel pressure
(Regulator is adjustable from 3-21 psi). Turning the adjustment screw clockwise will increase fuel
pressure.
15. Once the desired operating fuel pressure is achieved, tighten the regulator adjustment jam nut.
16. Next, loosen the jam nut on the idle pressure adjustment setscrew (low pressure) and turn counter
clockwise until the desired idle pressure is achieved with the engine running at an idle, this pressure
must be lower then the operating system pressure. Once the desired pressure is achieved tighten the
setscrew jam nut.
17. If you do not want to keep the fuel pressure gauge on the vehicle, relieve the fuel system pressure as
instructed in the appropriate vehicle service manual. Remove the fuel pressure gauge and reinstall
the a pipe plug into the gauge port, using thread sealant.
18. Test drive the vehicle to insure proper operation and re-check the fuel system for leaks.
If any leaks
are found, immediately shut off the engine and repair the leak(s)!
Idle Pressure Adjust
(Low Pressure)
Main Pressure Adjust
(High Pressure)
