LAUNCH Injector Cleaner & Tester User’s Manual
10
On-Vehicle Cleaning
After the engine has been in operation for a period of time,
its fuel flow may be blocked or become un-smooth owing
to buildup of dust and impurities in fuel channel. In addition,
the carbon deposits and gum made by combustion can
easily adhere to the injectors, inlet and outlet ports, inlet
and outlet hoses, throttle and combustion chamber. So the
fuel supply system, combustion chamber and injectors of
the engine must be cleaned on a timely basis. On-vehicle
cleaning is a solution that can save your time and labor.
Procedures
1)
Please check if there is test liquid or detergent inside
the fuel tank before on-vehicle cleaning. If test liquid
is in the tank, replace it with detergent. The detailed
procedure to be followed: remove the level indicator on
the left of the main unit, and drain the test liquid inside
fuel tank into a container. If the drained test liquid
contains lots of impurities and can not be reused,
please dispose it in the proper way and fill with new
test liquid. If the drained test liquid is clean, please
store it for later using.
2)
Blend the detergent with the fuel at a certain ratio, and
fill the mixture into the fuel tank. (Consult the user’s
manual of detergent for blending ratio.) Refer to the
following table for filling amount, as shown in the
following table:
No. of
cylinders
4
cylinder
6/8
cylinder
Amount
about 800~1000ml
about 1500ml
3)
The connection of engine fuel pipes has been shown
in “Connecting” below.
4)
Choose [On-vehicle cleaning] function on the control
panel, and set the time and press [Run] button to start
the test, then start the engine with park gear.
5)
Refer to specifications required by various
vehicle types to adjust system pressure by
pressing [decrease pressure]/[increase pressure]
key(The user can press the
［ ］
key then press
run key the system pressure will come back to
the default pressure value When the function of
item section is working).Press [Stop] button at
any time to stop the cleaning.
Fig.08
1- Fuel-return connector; 2- Fuel-return hose from engine;
3-Fuel-inlet hose to engine
Connecting
The hose line connection of the engine with return hose is
shown as in Fig.09.
1)
Disconnect the connections of fuel supply hoses (C
、
D) and fuel return hoses(A
、
B) of the engine fuel
system( wrap the connector with towel when
disconnecting the connector). Choose proper
connectors and connect them to the B end and C end
separately, and then connect the other ends to
corresponding return hose and outlet hose of the unit.
See Fig.09.
2)
Connect the disconnected other ends (A
、
D) with
proper hose, or remove the fuel pump fuse, or
disconnect the power cable of engine fuel pump.
Fig.09
1-CNC Injector Cleaner & Tester; 2-Engine; 3- Fuel-return
hose from engine; 4- Fuel-inlet hose to engine; 5-Auto
filter; 6-Engine fuel supply hose; 7-Engine fuel return hose;
8- Auto fuel pump; 9-Auto tank
Without return hose connecting:
The hose line connection of the engine without return
hose is shown as in Fig.10.
1)
Disconnect the fuel supply hoses (E, F) of engine fuel
system (wrap the connector when disconnecting the
connector), and then choose a proper connector and
connect it to the E end. Reconnect the fuel outlet
hose of the unit well and make the fuel return hose
hanging. See Fig.10.
2)
Stop the other end of the disconnected end (F) with a
proper stopper, (use when the fuel pump has the fuel
return function only) or remove the fuse of fuel pump
or disconnect the power cable of fuel pump.
Fig.10
1-CNC Injector Cleaner & Tester; 2-Engine; 3-stopper;
4- Fuel-inlet hose to engine; 5-Auto tank;
6-Auto filter; 7- Engine fuel supply hose; 8-Auto fuel pump
；
