Page 268 of 600
Name SizeNumbers of
fastenerTightening
torque (Nm)Note (total
tightening
torque)
Idler pulley/tensioner
pulley1
-
Glow plug M5 4
-
Vacuum pump
3 -
Timing gear case cover
7 -
1 -
3 -
Cylinder head cover
21 -
Oil dipstick gauge cover
1 -
Oil filter cap 1
-
Fuel rail
2 -
Injector clamp bolt
2 -
High pressure pipe
(between high pressure
pump and fuel rail
assembly)M17 1
-
High pressure pipe
(between fuel rail
assembly and injector)M17 4
-
Crankshaft position
sensor
1 -
Main wiring
5 -
Intake duct
3 -
Power steering pump
3 -
Cylinder head front cover
5 -
Page 272 of 600
0000-00
Component SizeBolt
QuantitySpecified torque
(Nm)Remark
(Total torque)
Hot water inlet pipe
2 -
Alternator
1 -
1 -
A/C bracket
4 7.8~11.8Nm -
A/C sub bracket
4 -
Intake manifold
2 -
6 -
Oil filter module
6 -
1 -
2 -
Knock sensor
2 -
Cam position sensor
1 10~14Nm -
Booster pressure sensor
2 -
Exhaust manifold M8 10
-
Turbocharger M8 3
-
Support bolt 1
-
Support nut M8 1
-
T/C oil supply pipe M6(block side) 1
-
M6(turbo side) 1
-
T/C oil return pipe
2 -
2 -
EGR valve
2 -
EGR pipe bolt
(Intake side)
2 -
EGR pipe bolt
(EGR cooler side)
2 -
EGR combination bolt
4 -
16 -
Idle pulley/Tensioner
pulley1
-
Page 273 of 600
Component SizeBolt
QuantitySpecified torque
(Nm)Remark
(Total torque)
Glow plug M5 4
-
Vacuum pump
3 -
Timing gear case cover
3 -
7 -
1 -
3 -
Cylinder head cover
21 -
Oil gauge tube
1 -
Oil filter cap 1
-
Fuel rail
2 -
Injector clamp bolt
2 -
High pressure pipe
(between HP pump and
fuel rail)M17 1
-
High pressure pipe
(between fuel rail and
injector)M17 4
-
Crank position sensor
1 -
Main wiring
5 -
Intake duct M8x25 4
-
Power steering pump
3 -
Cylinder head front cover
5 -
Ladder frame
5 -
Oil pump
3 -
Page 316 of 600
0000-00
The bottom side of water jacket is desgined as sine wave to strengthen the structure of crankcase. The
main flow of coolant starts from outlet port of water pump and goes along the longitudinal direction of
engine. The coolant passage from cylinder head to inlet port of water pump is integrated in cylinder head.
The engine oil from oil pump is supplied to the main oil gallery through oil channel, oil filter module and
cross bore in cylinder block without using external pipes. This oil is supplied to main bearing, cylinder
head and MBU. And, it is sprayed to the chain through the chain tensioner connected to cross bore.
Crankcase cross bore for oil supply
Water jacket core
Page 334 of 600

(2) Di engine and its expected problems and remedies can be caused by
water in fuel
System supplement against paraffin separation
In case of Diesel fuel, paraffin, one of the elements, can be separated from fuel during winter and then
can stick on the fuel filter blocking fuel flow and causing difficult starting finally. Oil companies supply
summer fuel and winter fuel by differentiating mixing ratio of kerosene and other elements by region and
season. However, above phenomenon can be happened if stations have poor facilities or sell improper
fuel for the season. In case of DI engine, purity of fuel is very important factor to keep internal
preciseness of HP pump and injector.
Accordingly, more dense mesh than conventional fuel filter is used. To prevent fuel filter internal clogging
due to paraffin separation, SYMC is using fuel line that high pressure and temperature fuel injected by
injector returns through fuel filter to have an effect of built-in heater (see fuel system).
System supplement and remedy against water in fuel
As mentioned above, some gas stations supply fuel with excessive than specified water. In the
conventional IDI engine, excessive water in the fuel only causes dropping engine power or engine
hunting. However, fuel system in the DI engine consists of precise components so water in the fuel can
cause malfunctions of HP pump due to poor lubrication of pump caused by poor coating film during high
speed pumping and bacterization (under long period parking). To prevent problems can be caused by
excessive water in fuel, water separator is installed inside of fuel filter. When fuel is passing filter, water
that has relatively bigger specific gravity is accumulated on the bottom of the filter.
Water drain from water separator
If water in the separator on the fuel filter exceeds a certain level, it will be supplied to HP pump with fuel,
so the engine ECU turns on warning lamp on the meter cluster and buzzer if water level is higher than a
certain level.
Due to engine layout, a customer cannot easily drain water from fuel filter directly, so if a customer
checks in to change engine oil, be sure to perform water drain from fuel filter.
Water
separator
To separate the water from the fuel filter,
remove the fuel filter assembly first.
Page 355 of 600

2. INSPECTION
1) Cautions During Driving
The following lists cautions to take during test drive and on the turbocharger vehicle, which must be
considered during the operation.
It's important not to drastically increase the engine rpm starting the engine. It could make rotation at
excessive speed even before the journal bearing is lubricated and when the turbocharger rotates in
poor oil supply condition, it could cause damage of bearing seizure within few seconds.
If the engine is running radically after replacing the engine oil or oil filter brings poor oil supply
condition. To avoid this, it's necessary to start off after idling the engine for about 1 minute allowing oil
to circulate to the turbocharger after the replacement.
When the engine is stopped abruptly after driving at high speed, the turbocharger continues to rotate
in condition where the oil pressure is at '0'. In such condition, an oil film between the journal bearing
and the housing shaft journal section gets broken and this causes abrasion of the journal bearing due
to the rapid contact. The repeat of such condition significantly reduces life of the turbocharger.
Therefore, the engine should be stopped possibly in the idle condition. 1.
2.
3.
After string for long period of time during winter season or in the low temperature condition where the
fluidity of engine oil declines, the engine, before being started, should be cranked to circulate oil and
must drive after checking the oil pressure is in normal condition by idling the engine for few minutes.
Page 358 of 600
1914-01
4) Possible Causes of Defect
The following tries to understand the defects that can occur with vehicle installed with the turbocharger
and to manage the reasons of such defects.
In case where oil pan/oil pipe has been contaminated, oil filter is defected and where adhesive of
gaskets has been contaminated into the oil line. 1.
Page 359 of 600
Oil Pump Defect: Rapid over-loaded driving after replacing oil filter and oil and clogging of oil line. 2.