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1.Remove the engine cover
assembly upper (Refer to GROUP 11G - 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 11G - Engine Assembly ).
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