Suzuki Wagon R Manual page 2306

ENGINE AND EMISSION CONTROL SYSTEM (M13 ENGINE) 6E2-25
Fuel injector removal and installation
Removal
CAUTION:
A small amount of fuel may come out after removal of
fuel injectors, cover them with shop cloth.
1) Relieve fuel pressure according to procedure described in
"Fuel Pressure Relief Procedure" of Section 6-2.
2) Disconnect battery negative cable at battery.
3) Disconnect MAF and IAT sensor connector, and detach
EVAP canister purge valve.
4) Remove air cleaner assembly with air intake pipe.
5) Disconnect fuel injector couplers.
6) Disconnect fuel feed hose from fuel delivery pipe (1).
7) Remove fuel delivery pipe bolts (2).
8) Remove fuel injector(s) (3).
Installation
For installation, reverse removal procedure and note following
precautions.
• Replace injector O-ring (1) with new one using care not to
damage it.
• Check if cushion (2) is scored or damaged. If it is, replace
with new one.
• Apply thin coat of fuel to O-rings (1) and then install injectors
(3) into delivery pipe (4) and cylinder head.
Make sure that injectors (3) rotate smoothly (6). If not, proba-
ble cause is incorrect installation of O-ring (1). Replace O-
ring (1) with new one.
• Tighten delivery pipe bolts (5) and make sure that injectors
(3) rotate smoothly (6).
Tightening torque
Delivery pipe bolts (a): 25 N·m (2.5 kg-m, 18.0 lb-ft)
• After installation, with engine "OFF" and ignition switch "ON",
check for fuel leaks around fuel line connection.