Suzuki 2000 Grand Vitara SQ625 Service Manual page 618

6E2-30 ENGINE AND EMISSION CONTROL SYSTEM (H25 ENGINE)
8) Connect fuel feed hose (1) and fuel return hose (2).
9) Connect connectors (3) to injectors.
10) Install throttle body and intake collector, refer to "THROTTLE
BODY INSTALLATION" in this section.
11) With engine "OFF" and ignition switch "ON", check for fuel
leaks around fuel line connection.