Aeromotive 17145 - 98 1_2-04 4.6L DOHC COBRA A1000 FUEL SYSTEM - Manual (Page 11)

4-7. Using a properly sized wrench, complete threading the two components together (The maximum allowable gap
between the two fitting components is .030 inches).
4-8. Inspect the hose for push out by comparing the mark you made on the hose in step D to the hose end socket location.
4-9. Clean all debris from exterior and interior of hose.
4-10. All lines should be tested to twice their operation pressure prior to use.