Fuel Injector Removal And Installation; Fuel Injector Inspection - Suzuki Liana RH413 Service Manual

1G-8 Fuel System:

Fuel Injector Removal and Installation

WARNING
!
Before servicing fuel system, be sure to
observe "Precautions on Fuel System
Service".
Removal
CAUTION
!
A small amount of fuel may come out after
removal of fuel injectors, cover them with
shop cloth.
1) Relieve fuel pressure referring to "Fuel Pressure
Relief Procedure".
2) Disconnect negative cable at battery.
3) Disconnect fuel injector couplers and release wire
harness from clamps.
4) Remove clamp bolt for fuel feed pipe and return
pipe.
5) Remove fuel delivery pipe bolts (2).
6) Remove fuel injector(s) (3).
1. Fuel delivery pipe
Installation
Reverse removal procedure for installation noting the
following.
• Replace injector O-ring (1) with new one using care
not to damage it.
• Check if insulator (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 intake manifold.
Make sure that injectors rotate smoothly (6). If not,
probable cause is incorrect installation of O-ring.
Replace O-ring with new one.
• Tighten delivery pipe bolts (5) to specified torque and
make sure that injectors rotate smoothly.
Tightening torque
S3RH0A1706007 Fuel delivery pipe bolt (a): 28 N·m (2.8 kgf-m, 20.5
lb-ft)
• After installation, with engine OFF and ignition switch
I2RH0B170009-01
ON, check for fuel leaks around fuel line connection.

Fuel Injector Inspection

WARNING
!
• Before servicing fuel system, be sure to
observe "Precautions on Fuel System
Service".
• As fuel is injected in this inspection,
perform in a well ventilated area and away
from open flames.
Use special care to prevent sparking when
connecting and disconnecting test lead to
and from battery.
1) Install injector (3) and fuel pressure regulator (4) to
special tool (injector checking tool).
I2RH0B170010-01
S3RH0A1706008