Water Pipe

WARNING: This page is about a different car, the 2021 Kia Soul. However, it is still accessible from the selected car via links, so may be relevant.

Remove the water temperature control assembly.
Remove the intake manifold.
(Refer to Intake and Exhaust System - "INTAKE MANIFOLD ")
Disconnect the injector connectors (A).
Disconnect the rail pressure sensor (RPS) connector (B).

Courtesy of KIA MOTORS AMERICA, INC.
Remove the water pipe (A).
Tightening torque

M6 bolt:

9.8 - 11.8 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.7 lb.ft)

M8 bolt:

18.6 - 23.5 N.m (1.9 - 2.4 kgf.m, 13.7 - 17.4 lb.ft)

Courtesy of KIA MOTORS AMERICA, INC.
Install in the reverse order of removal.