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1.Remove the engine cover
assembly upper (Refer to GROUP 11C - Engine Assembly
).
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![](../../../img/13/ACA00283AC00ENG.png)
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2.
caution |
Degrease the area between the
flare nut and the pipe
of the fuel injection pipe by fully spraying the
parts cleaner.
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Carefully degrease the flare nut at the fuel
injector assembly side of the fuel injection
pipe with parts cleaner (MZ100387) or
equivalent. 3.If the parts cleaner remains in the
area between the flare nut for connection and
the fuel injection pipe, the oil leak detection agent
detects that there is a fuel leak. Therefore,
use an air gun to blow off the remaining parts cleaner and
fully dry the degreased area. 4.Apply the oil leak
detection agent to the flare nut and the pipe of the fuel
injection
pipe.
note |
It is easy to detect the oil
leak when the oil leak detection agent is dry
enough because
the colour changes clearly. Use a dryer to dry
the oil leak detection agent when it is hard
to dry.
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5.
caution |
Before connecting or
disconnecting the M.U.T.-III, turn
the ignition switch to the "LOCK" (OFF)
position.
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Ensure that the ignition switch is at the "LOCK"
(OFF) position. 6.Start up the personal
computer. 7.Connect special tool M.U.T.-III USB
cable (MB991827) to V.C.I. (MB991824) and the
personal computer. 8.Connect special tool
M.U.T.-III main harness A (MB991910) to the
V.C.I. 9.Connect the M.U.T.-III main harness A to
the diagnosis connector of the vehicle. 10.Turn
the V.C.I. power switch to the "ON" position.
note |
When the V.C.I. is energised,
the V.C.I. indicator lamp will be illuminated in
a green colour.
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11.Start the M.U.T.-III system on the
personal computer and turn the ignition switch
to the "ON" position. 12.Start the engine, and let
it run at idle. 13.Select
"MPI/GDI/DIESEL" from System select Screen of
the M.U.T.-III. 14.Select "Special Function" from
MPI/GDI/DIESEL Screen. 15.Select
"Fuel leakage check" from Test Screen. Carry out the fuel
leakage check (during
the test, the engine speed and the fuel pressure is 2,000
r/min and 180 MPa for 20
seconds respectively) five times in a row (20 seconds
× 5 times = 100 seconds). 16.Turn the
ignition switch to the "LOCK" (OFF) position, and stop the
engine. 17.Disconnecting the M.U.T.-III is the
reverse of the connecting sequence. 18.Check the
colour change of the oil leak detection agent at the flare
nut and pipe
of the fuel injection pipe to check if the fuel is leaking
from the fuel injection pipe connection
at the fuel injector assembly side. 19.Visually
check other fuel line connections for fuel
leak. 20.If the fuel is leaking, replace the fuel
injection pipe and the fuel supply pump pipe.
(Refer to , .) 21.If
the fuel is not leaking, wipe off the oil leak detection
agent using parts cleaner
(MZ100387) or equivalent completely. 22.Install
the engine cover assembly upper (Refer to GROUP 11C -
Engine Assembly ).
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