2008 GEELY MK check engine

2-12Section 2 Maintenance Category and Content of MK SedanAs the vehicle is being used, its technical performance changes as the mileage accumulates and being affected by
various factors, which results in decrease of power, fuel economy, safety, and increase of emission pollutions,
noise and incidents. So timely maintenance during vehicle usage eliminates potential risks and prevents incidents
from happening, improves vehicle integrity and technical functionality, and prolongs useful life of the vehicle.
According to the vehicle technical requirements and usage history, maintenance of freedom Cruiser sedan can be
classified into several categories.I. first time maintenanceFirst time maintenance is also called breaking-in maintenance. It is performed when the vehicle mileage has
accumulated to 1500~2500km in breaking-in period. First time maintenance must be conducted at the appointed
service shops. It includes:
1. Check if there is any leak in engine, transmission, and differential. Fix if there is any.
2. Replace engine oil filter, engine oil and ATF for A/T.
3. Check the level of engine coolant, braking fluid, windshield washing fluid, power steering fluid and if there
is any leak. Refill if the level is too low and repair if there is any leak.
4. Check if there is any damage in triangle arm and ball joint, connection ball joint, triangle arm flexible hinge,
or the ball joint is loose. If there is, fix or replace it.
5. Check if the drive shaft dust cover is damaged. If there is, replace it.
6. Check if there is any leak in steering mechanism, or front and rear absorber and fix it there is any.
7. Check the tire pressure, front 230kpa, and rear 210kpa.II. Regular maintenanceAfter first time maintenance, the vehicle is in regular usage life. During regular use, the vehicle needs to be
maintained regularly according to the way it is used in.
1.Regular maintenance for vehicles used under extreme bad conditions. Any of the condition below is defined
as extreme bad condition:
(1) Frequent start.
(2) Often drive the vehicle in dusty circumstances.
(3) Drive the vehicle in hot areas (such as in summer in the south).
(4) Often drive in cold areas (often runs short trips, engine temperate cannot reach regular work temperature).
Vehicles ran under extreme bad conditions need to be maintained every 5000km.
2. Regular maintenance for vehicles Vehicles that have not been through extreme bad conditions need to be
maintained every 7500km.
Regular maintenance is required to be performed at Geely service shop, too.
List of parts that need to be replaced regularly is in table 1.
Maintenance timetable is in table2.III. Geely maintenance programGeely recommends following Geely maintenance program.
The intervals of maintenance schedules are determined by mileage meter or time periods. Maintain the vehicle
when either meets the schedule. For details, please refer to the schedule.Usage and Maintenance of MK Series - Maintenance Category and Content of MK Sedan

2-13For servicing items whose deadlines have expired, they should be maintained at the same intervals as before. The
intervals are recorded in maintenance schedule.
Rubber hoses
Used in cooling and heating system, braking and fuel-feeding systems should be inspected by qualified Geely
technicians according to Geely maintenance schedule.
There are all very important maintenance items. Hoses must be replaced immediately should there be any aging
or damage. Please pay attention, rubber hoses age as time goes by, and they may have problems of inflation, wear,
or crack.
Special Tips
If the vehicle is driven under one or more of the following circumstances, the maintenance items should be
carried out more frequently. See attached maintenance schedule.
A Road condition
1. drive on rough, muddy or skiddy roads
2. drive on dusty roads.
B driving condition
1. Repeat driving within 8km a few times, or when the outdoor temperature is below 0 degree centigrade.
2. Idle the car drive at a low speed for a long time, such as police car, taxi, or door to door delivery vehicles.
3. Continuously drive the car at high speed for more than 2 hours (80% of the max speed).IV. Regular inspections1. weekly schedule

inspect engine oil level and cleanness
inspect engine coolant level
inspect brake fluid level

inspect windshield wash fluid level
inspect power steering fluid level
2. monthly inspections

inspect water pump belt
inspect electrolyte level in battery
inspect tire air pressure and wear

inspect steering wheel
inspect brake
inspect acceleration pedal
3. inspection when driving (low speed)

inspect speed meter and water temperature
check steering wheel power and if vehicle runs off-track

check if the front wheels skid or swing
inspect if brake functions or if the vehicle runs off-track when brake is functioning
4. other inspection items
Eliminate problems immediately when there is anything abnormalUsage and Maintenance of MK Series - Maintenance Category and Content of MK Sedan

2-18Section 3 Daily Maintenance of MK SedanDaily maintenance means operation of vehicle regular inspection, cleaning, fastening, and refilling according to
vehicle usage and condition on the basis of regular maintenance to make sure the vehicle is at good status. Daily
maintenance can be performed by driver or professional automotive mechanics in daily use of vehicle. But some
of the items must be conducted by professional mechanics at service shops.
1. Maintenance of air cleaner
Air cleaner filters the air that is coming into engine for the first time. Dust and other dirt filtered out gathers in the
induction tube. Air cleaner filters a lot of dust and dirty, so it must be cleaned in time.
2. Maintenance of air filter
Air filter does not only filter the dust and dirt in the air, but also keeps smooth ventilation. Its status has great effects
on the fuel economy and power of the engine, so it must be checked and maintained in time.
Before it is time to replace air filter, maintain it. Remove the filter, knock it with hand or stick to get rid of dust
on the filter and remove dirt inside the filter cover according to the cleanness of the road that the vehicle usually
runs on.
ATTENTION: do not clean the filter with wet cloth. Fasten the filter well when installing it back.
3. Maintenance of battery
Battery is used to start the vehicle and supply power to electrical facilities. Its status directly affects the regular
usage of the vehicle, especially for vehicles equipped with electrical controlled facilities. Keeping the battery in
good technical status and connections is especially important. It is necessary to often perform the following
inspections and maintenance in regular usage:
(1) Clean the outside of battery Inspect if the battery case or cover surface is dirty or has dirt, oil, or other dirty
things regularly. Clean it and keep the surface dry to avoid electrical leak caused by cover deformation.
(2) Check battery connections Bad connection between battery electrode and cable results in low engine start
speed which makes it difficult to start the vehicle or the vehicle cannot be started because of low output voltage
from battery. Loose connection at battery end leads to damage of electrical components and loss of trouble code
and other information stored in RAM of the computer system as a result of low voltage. Therefore, it is necessary
to check if the connection of cables on the battery electrode is good. When it is found loose, it must be fastened.
If there is any rust, the cables must be loosened, washed clean and be connected again.
4. Maintenance of tires and wheels
(1) Keeping tires and wheels under good condition is very important to vehicle fuel consumption and driving
safety. Therefore, inspect and maintain the tires regularly. Every 10000 km, the wheels should be adjusted. Follow
the sequence in picture 3:
Judge if there is any hidden problems in vehicle chassis mechanism by observing wear in different places, andfinding out the hidden problems does not only help you to understand
the technical status of the vehicle, but also benefits driving safety.
a. Serious wear on both edges of tire tread, means tires often
work with low tire pressure.
b. Wear of middle of the tire tread is mainly because the tires
are used with high tire pressure.This kind of wear shortens
the useful life of tires, and may result in sudden flat tire
when the vehicle runs on uneven road surface or meets any
obstacles.Usage and Maintenance of MK Series - Daily Maintenance of MK Sedan

2-20 (3) Long time exposure to sun damages interior. So it is better to use covers on upper seat backs, and rear
separation board that are exposed to sun.
8. Maintenance of body exterior
Body exterior is to keep body cleanness and brightness to give the impression of beauty and comfort, and to avoid
rust and abnormal paint peeling off. The key points of body maintenances are:
(1) Wash body using the method below:
a. Wash the dirty things off the body by pressurized water, and then clean the body with
soft cloth of sponge from up to down.
b. Dry body surface with good white cloth. Apply brake pedal several times when driving
after the car is washed to get rid of water in braking system.
c. Do not wipe the body when it is dry. Do not clean paint surface and glass with gasoline,
coal oil, narkosid, strong lye or alcohol.
(2) Cleaning windshield glass
Do not use silicon-bronze radical products. To get better cleaning effects, use special glass cleanser.
(3) Cleaning asphalt on the body
Do not peel the asphalt off from body or bumper, but use special cleanser
(4) Paint
Scratches or slight damages can be fixed with special paint spray. It dries in the air.
(5) Cleaning exterior decoration parts and aluminum parts. Wash with water with soap fluid or cleanser, and wash with clean water. To keep the gloss of painted surface,
wax on the surface after it is dry. (6) Polish and wax the body paint polishing and waxing keeps the body bright and pretty, and protects the paint
as well.
a. Polish in winter. Make sure the vehicle body is absolutely clean and dry before
polishing, polish with fluid or milky wax.
b. Vehicle body must be absolutely dry and clean before waxing. Use waxing tools (soft
table tissue or smooth cotton cloth) to cover the body paint surface evenly with wax.
Check if the vehicle body is covered by wax: spray some water onto the paint surface,
if water drops are formed, that surface is waxed, otherwise, clean the surface and wax
it again. Attention: do not wax under sun, or in cold weather.
Attention
1) When using high pressure washing machine, do not point the washing sprayer to transmission, steering
mechanism and other rubber protection parts, or exterior decoration parts, roof welding lines, heat radiator
or engine compartment.
2) The bottom of vehicle body is made of anti-corrosion material,and has been through anti-corrosion process.
After the vehicle has been running frequently on roads de-frozen with salt for some time, clean engine
compartment and lower part of vehicle body and take some protection actions.Usage and Maintenance of MK Series - Daily Maintenance of MK Sedan

Part III EngineChpater 1 Engine AssemblyInformation about engine accessories in MK-1 Car Maintenance Manual deals with only that concerned with a
complete car. Please refer to separated Maintenance Manual for information about the engine body. Engines
concerned are MR479Q, MR479QA and MR481QA.Section 1 Engine Inspection1. Check the engine oil
(1) Check the oil level.
(2) Start the engine, and reach warm-up temperature.
(3) Shut the engine down, wait for 3-5min, and check the oil level.
(4) Check whether the oil level is in within the range marked by the scale; if it is lower than the limit (mark
L), fill oil to mark F.
(5) Keep the oil clean without any coolant or petrol mixed in and with appropriate viscosity.
2. Change oil.
(1) Start the engine. When normal temperature is reached, shut down the engine.
(2) Open the oil cap, remove the oil drain plug, and drain the oil.
(3) Tighten the oil drain plug to a specified torque 54N.m.
(4) Fill fresh oil into the crank case with oil quantity 2.8L in case of the filter not changed, 3.0L in case of the
filter changed and 3.5L in case of the dry filter.
(5) Fit on the oil filling cap.
(6) Start the engine.
(7) Shut down the engine and check the oil quantity, and fill oil to the mark F on the oil scale if necessary.
3. Replace the oil filter.
(1) Remove the oil filter.
(2) Before mounting the oil filter, apply a small quantity of engine oil to the O-ring of the new oil filter.
(3) Tight the oil filter to a specified torque (12.7N.m).
(4) Start the engine, and check whether there is any leakage
(5) Shut down the engine, check the oil quantity and fill as required.
4. Oil selection
Oil over PAI SG grade is preferred.
SAE10W-30 or SAE10W-40 is preferred, and ASE5W-30 is used in cold region in the winter.
Note: For the best effect and the greatest safety, it is advisable to use the following lubrication oil.
a. Meet the requirements of API level.
b. Select proper SAE viscosity rating within expected ambient temperature.
The lubrication oil that can not meet the requirements of SAE viscosity and API label at the same time is not
allowed.
5. Check the coolant.
(1) After the engine is cooled down, remove the radiator cover.EngineEngine Assembly3-1 -

TableEngine AssemblyEngine Inspection3-2 Note:
Check the belt distortion at the specified point (see Figure 1-1).
When mounting a new belt, set the tensioning force to specified value.
After the belt has been operated more than 5 minutes, check and ensure the distortion not exceeding specified
value. (2) Make sure that the coolant level is above the neck of the radiator.
(3) Put the radiator cover in place, pressurize to 2.0Mpa, and keep the pressure for 1minute unless the coolant
leaks. (Mount a tester on the radiator cover, start the engine, and then shut down under a pressure 2.0Mpa).
(4) Check whether the coolant quantity in the dilatation can is between the mark "Low" and "Full".
(5) Check whether the radiator cover is clean; test whether the opening pressure of the main valve is 107.8KPa
with a radiator cover tester. The minimum opening pressure is 58.5KPa.
6. Check the battery.
(1) The terminal voltage of the battery is 12.5-12.9V at 20°C, and charge when the voltage value is less than
the specified value. Check whether the fusible cutout and the fuse are loose, corrosive or on.
7. Check the air filter.
(1) Whether the cover, the case or the element of the filter is distorted, corroded or damaged.
(2) Whether the air hose is damaged.
(3) Whether the air chamber is distorted or damaged.
(4) Whether the air filter element is blocked, polluted or damaged. If the filter element is blocked slightly,
remove the dirt by blowing the element from above.
(5) Whether there is any pollutant or dirt on the air filter support.
8. Check the spark plug.
(1) Spark generation.
a. Disconnect the coupling of the injector.
b. Remove the spark plug from the secondary wire.
c. Remove the spark plug.
d. Connect the spark plug to the secondary wire.
e. Ground the spark plug.
f. Start the engine, and check whether spark is generated.
Prompt: The starting time is not more than 1-2s.
(2) Clean the spark plug: The air pressure is not greater than 588kp and the time is not more than 20s.
(3) Check whether the thread and the insulator of the spark plug are damaged. Replace if necessary.
(4) Check the electrode gap of the spark plug: 0.8±0.1mm for MR479Q and MR479QA; 1±0.05mm for
MR481QA.
9. Check the driving belt.
Belt distortion (see Table 1):
Belt pressure: 98NMeasure belt loosenessCompressor
Crank Power steering
pumpWater
pump
Alternator2 1
3Figure 1-1New belt mm Used belt mm
Generator drive belt 7~9 11.5-13.5
Power steering belt 5~6 6~8
Air conditioner belt 6.5~7 8~9 -

Figure 1-2
Figure 1-3Engine AssemblyEngine Inspection3-3 After the belt is re-mounted and operates more than 5 minutes, check the distortion based on old belt
distortion.
Check the tensioning force and the distortion of the V-belt after the crankshaft of the engine has rotated 2
turns.
10. Check the ignition timing (see Figure 1-2).
(1) Start the engine for warming up.
(2) When using the portable tester:
Connect the portable tester to the fault diagnosis socket
(DLC3).
Ignition timing:
before the top dead center when idling.
Prompt:
Please refer to the operating manual of the portable tester for
detail.
(3) When not using the portable tester:
a.Short the terminals 13(TC) and 4(CG) of the fault diagnosis socket(DLC3) with special service tool(SST).
Attention:

Make sure to connect correctly, or else the engine can be damaged.
Switch off all the electric systems.
Check when the cooling fan motor is disconnected.
b.Check the ignition timing with a timing light.
Ignition timing: 10°±20' before the top dead center when idling.
Note:
(a) Check the ignition timing, and the transmission should be set to the neutral position.
(b) Keep the engine speed at 1,000-1,300r/min for 5s and check when idling.
(c) Remove the special tool on the fault diagnosis socket.
(d) When the engine speed rises, the advance angle of ignition timing will increase.
(e) Remove the timing light.
11. Check the engine idle (see Figure 1-3).
(1) The engine warms up.
(2) When using the portable tester: Connect the portable tester to the fault diagnosis socket (DLC3).
Tip: Please refer to the operating manual of the portable tester for
detail.
(3) When not using the portable tester:
Connect the test pen of the tachometer to the terminal 9(TAC) of
the fault diagnosis socket (DLC3) with special tool (SST). (see
Figure 1-3).
(4) Check the idling speed: 800±50r/min.
Attention:
Check idle when the cooling fan motor is disconnected.
Switch off all the electric accessories and air conditioners.Tachometer
Battery10°±20' -

12. Check the compressing pressure (see Figure 1-4).
(1) Warm up and switch off the engine.
(2) Remove the secondary wire.
(3) Remove the spark plug.
(4) Check the compressing pressure in the cylinder.
a.Insert the pressure gauge into the spark plug bore.
b. Throttle widely opens.
c. Rotate the engine crankshaft and measure the compressing
pressure (see Table 2).Figure 1-4Table 2Cylinder compressing pressure (KPa)Pressure difference range of cylinders of this model (KPa)Minimum compressing pressure (KPa)MR479Q MR479QA MR481QA
1250 1320 1360
100
980
Attention:
The electric quantity in the battery should be always enough, and the engine speed should be not less than
250r/min.

Check the compressing pressure in other cylinders in the same way.
Measure as soon as possible.
(5) If the compressing pressure in more than one cylinder is relatively low, fill a bit engine oil to the cylinder
through the spark plug bore, and repeat step a to c to check.
Tip:

If the compressing pressure is increased after the oil is filled, the piston ring or the cylinder may be worn or
damaged.
If the pressure is still low, the valve may be jammed or badly sealed, or the washer may be leaked.
13. Check CO/HC.
(1) Start the engine.
(2) Keep the engine running at a speed of 2500 r/min for about 180s.
(3) During idling, insert the test bar of CO/HC instrument into the exhaust pipe about 40cm depth at least.
(4) Check the concentration of emission of CO/HC at idle speed and at a speed of 2500 r/min respectively.
Tip:

Measure within 3 minutes.
Test the concentration of emission and lambda value of CO/HC at idle speed and at a speed of 2500 r/min
respectively according to GB18352.3-2005 standard.
(5) If the concentration of CO/HC is not up to standard, carry out fault diagnosis by following the steps below.
(1) Check oxygen sensor.
(2) Refer to Table 3 to find possible causes, check and repair.Engine AssemblyEngine Inspection3-4 -