SsangYong Stavic / SsangYong Rodius (2005 year). Manual - part 79

DI01-11

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE ASSEMBLY

DI ENG SM - 2004.9

Probable Cause

• Refer to “Compression Pressure

Test”.

• Clogged fuel pipe.

• Clogged or contaminated fuel

filter.

• Malfunction of the fuel pressure

regulator.

• Malfunction of the spark plug.

• Electric leakage or poor

connection of the high tension
cable.

• Poor ignition timing.

• Leak of the intake manifold

gasket.

• Leakage of the vacuum hose.

• Refer to “Overheat” in this page.

• Abnormal spark plug.

• Poor ignition timing.

• Electric leakage or poor connec-

tion of the high tension cable.

• Clogged or contaminated fuel

filter and fuel pipe.

• Leak of the intake manifold

gasket.

• Excessive carbon deposit due to

abnormal combustion.

• Lack of coolant.

• Malfunction of the thermostat.

• Malfunction of the cooling fan.

• Poor water pump performance.

• Clogged or leaky radiator.

• Poor engine oil.

• Blocking oil filter or strainer.

• Lack of engine oil.

• Poor oil pump performance.

• Leakage of oil

• Damaged cylinder head gasket.

Correction

• Refer to “Compression Pressure

Test”.

• Clean the pipe.

• Replace the filter.

• Replace the fuel pressure

regulator.

• Adjust or replace the spark plug.

• Connect the cable correctly or

replace it.

• Adjust the ignition timing.

• Clean or replace the gasket.

• Connect the hose correctly or

replace it.

• Refer to “Overheat” in this page.

• Replace the spark plug.

• Adjust the ignition timing

• Connect the cable correctly or

replace it.

• Clean or replace the fuel filter and

the fuel pipe.

• Replace the gasket.

• Remove the carbon.

• Refill coolant.

• Replace the thermostat.

• Check or replace the cooling fan.

• Replace the pump.

• Clean, repair or replace the

radiator.

• Replace engine oil with the

specified one.

• Clean or repair the oil filter or the

strainer.

• Refill oil.

• Replace or repair the pump.

• Repair.

• Replace the gasket.

Condition

GENERAL DIAGNOSIS (Cont’d)

Decline of
Compression
Pressure

Engine Surging
(Engine power
makes
fluctuation in a
fixed speed and
speed changes
without
operating the
accelerating
pedal.)

Malfunction of
Fuel System

Overheat

Malfunction of
Ignition System

Others

Others

Malfunction of
Fuel System

Malfunction of
Cooling System

Excessive
Detonation
(According to
the opening
range of Mal-
function of
metallic is made
with abnormal
explosion )

Malfunction of
Ignition System

Malfunction of
Lubrication
System

Other

Overheated
Engine

DI01-12

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE ASSEMBLY

DI ENG SM - 2004.9

Probable Cause

• Refer to “Compression Pressure

Test”.

• Leakage of the fuel tank or the

fuel pipe.

• Improper ignition timing.

• Abnormal spark plug

(Excessive carbon deposit,
inadequate gap, burnt electrode).

• Electric leakage or poor

connection of the high tension
cable.

• Malfunction of the thermostat.

• Improperly installed valve.

• Low pressure of tires.

• Loosened oil drain plug.

• Loosened oil pan bolt.

• Loosened oil filter.

• Loosened oil pressure switch.

• Leakage of camshaft front oil seal.

• Leakage of crankshaft front oil seal.

• Leakage at the cylinder head

cover gasket.

• Damage of the cylinder head

gasket.

• Stuck piston ring.

• Worn piston or cylinder.

• Worn piston ring or ring groove.

• Inadequate position of the piston

ring cutting part.

• Abrasion or damage of the valve

system.

• Inadequate oil viscosity.

• Loosening of the oil pressure

switch.

• Lack of engine oil.

• Blocking oil strainer.

• Lowered function of the oil pump.

• Abrasion or damage of the oil

pump relief valve.

Correction

• Refer to “Compression Pressure

Test”.

• Repair or replace the fuel tank or

the fuel pipe

• Adjust the ignition timing.

• Replace the plug.

• Connect the cable normally or

replace it.

• Repair the thermostat.

• Repair or replace the valve.

• Adjust the pressure of tires.

• Tighten the plug.

• Tighten the bolt.

• Tighten the filter.

• Tighten the switch.

• Replace the seal.

• Replace the seal.

• Replace the gasket.

• Replace the gasket.

• Remove carbon and replace the

ring.

• Replace the piston or the

cylinder.

• Replace the piston or ring.

• Adjust the position.

• Replace the valve system.

• Replace with the specified one.

• Tighten the switch.

• Refill oil.

• Clean the strainer.

• Replace the pump.

• Replace the valve.

Condition

GENERAL DIAGNOSIS (Cont’d)

Decline of
Compression
Pressure

Poor Fuel
Consumption

Malfunction of
Fuel System

Low Oil
Pressure

Malfunction of
Ignition System

Malfunction of
Cooling System

Oil Mixing in Com-
bustion Chamber

Others

Malfunction of Lu-
brication System

Excessive
Consumption of
Engine Oil

Leakage of
Engine Oil

DI01-13

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE ASSEMBLY

DI ENG SM - 2004.9

Probable Cause

• Inadequate valve clearance

• Abrasion of valve stem or guide.

• Weak valve spring.

• Abrasion of the piston, the ring or

the cylinder.

• Abrasion of the connecting rod

bearing.

• Loosened the connecting rod nut.

• Abrasion of the crankshaft

bearing.

• Abrasion of the crankshaft

journal.

• Loosened bearing cap bolt.

• Excessive clearance of the

crankshaft thrust bearing.

• Low oil pressure.

Correction

• Adjust the valve clearance.

• Replace the valve stem or the

guide.

• Replace the spring.

• Boring the cylinder or replace the

piston, the ring or the cylinder.

• Replace the bearing.

• Tighten to the specified torque

• Replace the bearing.

• Grind or replace the crankshaft

journal.

• Tighten to the specified torque.

• Adjust or replace.

• Refer to “Low Oil Pressure” in

this section.

Condition

GENERAL DIAGNOSIS (Cont’d)

Valve Noise

Engine Noise

Piston, Ring,
Cylinder Noise

Connecting Rod
Noise

Crankshaft Noise

DI01-14

CHANGED BY

EFFECTIVE DATE

AFFECTED VIN

ENGINE ASSEMBLY

DI ENG SM - 2004.9

OIL LEAK DIAGNOSIS

Most fluid oil leaks are easily located and repaired by vi-
sually finding the leak and replacing or repairing the nec-
essary parts. On some occasions a fluid leak may be dif-
ficult to locate or repair. The following procedures may
help you in locating and repairing most leaks.

Finding the Leak

1. Identify the fluid. Determine whether it is engine oil,

automatic transmission fluid, power steering fluid, etc.

2. Identify where the fluid is leaking from.

2.1 After running the vehicle at normal operating

temperature, park the vehicle over a large sheet
of paper.

2.2 Wait a few minutes.

2.3 You should be able to find the approximate

location of the leak by the drippings on the
paper.

3. Visually check around the suspected component.

Check around all the gasket mating surfaces for
leaks. A mirror is useful for finding leaks in areas that
are hard to reach.

4. If the leak still cannot be found, it may be necessary

to clean the suspected area with a degreaser, steam
or spray solvent.

4.1 Clean the area well.

4.2 Dry the area.

4.3 Operate the vehicle for several miles at normal

operating temperature and varying speeds.

4.4 After operating the vehicle, visually check the

suspected component.

4.5 If you still cannot locate the leak, try using the

powder or black light and dye method.

Powder Method

1. Clean the suspected area.

2. Apply an aerosol-type powder (such as foot powder)

to the suspected area.

3. Operate the vehicle under normal operating

conditoins.

4. Visually inspect the suspected component. You

should be able to trace the leak path over the white
powder surface to the source.

DIAGNOSTIC INFORMATION AND PROCEDURE

Black Light and Dye Method

A dye and light kit is available for finding leaks, Refer to
the manufacturer's directions when using the kit.

1. Pour the specified amount of dye into the engine oil

fill tube.

2. Operate the vehicle normal operating conditions as

directed in the kit.

3. Direct the light toward the suspected area. The dyed

fluid will appear as a yellow path leading to the
source.

Repairing the Leak

Once the origin of the leak has been pinpointed and traced
back to its source, the cause of the leak must be deter-
mined in order for it to be repaired properly. If a gasket is
replaced, but the sealing flange is bent, the new gasket
will not repair the leak. The bent flange must be repaired
also. Before attempting to repair a leak, check for the fol-
lowing conditions and correct them as they may cause a
leak.

Gaskets

• The fluid level/pressure is too high.

• The crankcase ventilation system is malfunctioning.

• The fasteners are tightened improperly or the threads

are dirty or damaged.

• The flanges or the sealing surface is warped.

• There are scratches, burrs or other damage to the

sealing surface.

• The gasket is damaged or worn.

• There is cracking or porosity of the component.

• An improper seal was used (where applicable).

Seals

• The fluid level/pressure is too high.

• The crankcase ventilation system is malfunctioning.

• The seal bore is damaged (scratched, burred or nicked).

• The seal is damaged or worn.

• Improper installation is evident.

• There are cracks in the components.

• The shaft surface is scratched, nicked or damaged.

• A loose or worn bearing is causing excess seal wear.