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CHAPTER 3 ENGINE
● Place the bolts on module cover and tighten the bolts gradually in star pattern sequence to
apply equal compression on gasket. It is shown as below:
Bolt Tightening Torque: 10 Nm. Fuel module is installed with the M6×10 bolts. Use
designated bolts only. Follow the tightening torque and tightening sequence instruction. Over
torque and miss-sequence can cause unequal compression of gasket and leakage.
● Install the fuel tank to vehicle.
● Connect for fuel hoses with suitable hose clamps.
● Connect fuel module coupler
● Follow ' Fuel Leakage Check Procedure' (3.5.8.7) to check any leakage before the engine
is started.
3.5.8.7 Fuel Pressure Relief Procedure
Caution: This work must not be done when engine is hot. If done so, it may cause adverse
effect to catalyst (if equipped)
After making sure that engine is cold, relieve fuel pressure as follows.
● Place vehicle gear in 'Neutral'.
● Disconnect fuel module electrical coupler from vehicle harness.
● Start engine and run till it stops due to lack of fuel. Repeat ignition key ON and OFF for 2 ~ 3
times of about 3 seconds each time to relieve fuel pressure in lines. Fuel Connections are now
safe for servicing.
● Upon the completion of servicing, Connect Fuel Module Connector to Vehicle Harness.
3.5.8.8 Fuel Leakage Check Procedure:
After performing any service on fuel system, check to make sure that there are no fuel
leakages as below.
● Fill about 3 ~ 5 liters of fuel in tank.
● Turn Ignition key to ON position for 3 seconds (to operate fuel pump) and then turn to OFF
position. Repeat this for 3 ~ 4 times to apply fuel pressure in fuel lines.
● In this state, check to see that there are no fuel leakage from any part of fuel system (Fuel
Tank, Hoses, Hose Joints, etc)
3.5.9 Motor Scanner ( for MT05 EMS)
3.5.9.1 Precautions
● Motor-Scanner is a precision instrument and should be protected from vibration and impact.
● If the unit does not run correctly or the screen is unstable when first turned on, disconnect it
from the main lead and try again.
● Make sure the DLC is always firmly inserted into the diagnostic socket.
T-Boss550 SERVICE MANUAL20.0
CHAPTER 3 ENGINE
PAGE. 3- 116
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