15. Once the desired fuel pressure is achieved, tighten the jam-nut on the adjusting stud and attach the vacuum/boost
line if the vehicle has one. The vacuum/boost port may be left open to atmosphere by using a breather, (part
#15662). Blocking the vacuum port will yield poor regulator performance. This regulator includes vacuum/boost
fittings for both AN-04 and 5/32” hose barb. Replacement fittings can be purchased under p/n 15619 for AN-04, or
p/n 15630 for 5/32” hose barb.
16. If you wish to remove the fuel pressure gauge from the vehicle, FIRST relieve the fuel system pressure as instructed
in the appropriate vehicle service manual, then remove the fuel pressure gauge and reinstall the 1/8-NPT port plug.
17. Test drive the car 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)!
