2009 CHERY TIGGO check engine

Downloaded from www.Manualslib.com manuals search engine CONDITIONPOSSIBLE CAUSES CORRECTION
Engine Miss On Acceleration 1. Dirty or incorrectly gapped spark
plugs.
2. Contamination in fuel system.
7. Burned, warped, excessive
clearance, or pitted valves.
4. Faulty ignition coil(s).1. Clean spark plugs and set gap.
2. Clean fuel system and replace
fuel filter.
3. Replace valves.
4. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
Engine Miss At High Speed 1. Dirty or incorrect spark plug gap.
2. Faulty ignition coil(s).
3. Dirty fuel injector(s).
4. Contamination in fuel system.1. Clean spark plugs and set gap.
2. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
3. Test and replace if necessary.
(Refer to Appropriate Diagnostic
Information)
4. Clean system and replace fuel
filter.
Engine Mechanical Diagnostics
CONDITION
POSSIBLE CAUSES CORRECTION
Valve Train Noise 1. High or low oil level in crankcase.
2. Thin or diluted oil.
3. Thick oil.
4. Low oil pressure.
5. Worn cam lobe.
6. Worn valve guides.
7. Excessive runout of valve seats
on valve faces.1. Check and correct engine oil
level.
2. Change oil to correct viscosity.
3. Change engine oil and filter.
4. Check and correct engine oil
level.
5. Install new camshaft.
6. Replace cylinder head.
7. Grind valve seats and replace
valves.
Connecting Rod Noise 1. Insufficient oil supply.
2. Low oil pressure.
3. Thin or diluted oil.
4. Excessive bearing clearance.
5. Connecting rod journal out-of-
round.
6. Connecting rod out-of-round.
7. Misaligned connecting rods.
8. Connecting rod nuts loose.1. Check engine oil level.
2. Check engine oil level. Inspect oil
pump relief valve and spring.
3. Change oil to correct viscosity.
4. Measure bearings for correct
clearance. Repair if necessary.
5. Replace crankshaft or grind
surface.
6. Replace connecting rod.
7. Replace bent connecting rods.
8. Tighten the connecting rod nuts.
Main Bearing Noise 1. Insufficient oil supply.
2. Low oil pressure.
3. Thin or diluted oil.
4. Excessive bearing clearance.
5. Excessive end play.
6. Crankshaft journal out-of-round or
worn.
7. Loose flywheel or torque
converter.1. Check engine oil level.
2. Check engine oil level. Inspect oil
pump.
3. Change oil to correct viscosity.
4. Measure bearings for correct
clearance. Repair if necessary.
5. Check thrust bearing for wear on
flanges.
6. Replace crankshaft or grind
journals.
7. Tighten to correct torque.
DIAGNOSIS & TESTING
02–164Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine CONDITIONPOSSIBLE CAUSES CORRECTION
Oil Pressure Drop 1. Low oil level.
2. Faulty oil pressure sending unit.
3. Low oil pressure.
4. Clogged oil filter.
5. Thin or diluted oil.
6. Excessive bearing clearance.1. Check engine oil level.
2. Install new sending unit.
3. Check sending unit and main
bearing oil clearance.
4. Install new oil filter.
5. Change oil to correct viscosity.
6. Measure bearings for correct
clearance.
Oil Leaks 1. Misaligned or deteriorated
gaskets.
2. Loose fastener, broken or porous
metal part.
3. Misaligned or deteriorated cup or
threaded plug.1. Replace gasket.
2. Tighten, repair or replace the part.
3. Replace if necessary.
Oil Consumption Or Spark Plugs
Fouled 1. PCV system malfunction.
2. Worn, scuffed or broken rings.
3. Carbon in oil ring slots.
4. Rings fitted too tightly in grooves.
5. Worn valve guide(s).
6. Valve stem seal(s) worn or
damaged.1. Check system and repair if
necessary.
2. Hone cylinder bores. Install new
rings.
3. Install new rings.
4. Remove rings and check grooves.
If groove is not proper width, replace
piston.
5. Replace cylinder head.
6. Replace seal(s).
Cylinder Compression Pressure Test
•
The result of a cylinder compression pressure test
can be utilized to diagnose several engine malfunc-
tions.
• Ensure the battery is completely charged and the
engine starter motor is in good operating condition.
Otherwise the indicated compression pressures
may not be valid for diagnostic purposes.
Check engine oil level and add oil if neces-
sary.
Disconnect the spark plug wires.
Remove all spark plugs from engine (as spark plugs are being removed, check electrodes for
abnormal firing indicators fouled, hot, oily,
etc.).
Record cylinder number of each spark plug for future reference.
Disconnect fuel injector electrical connectors.
Be sure throttle blade is fully open during the compression check.
Insert compression pressure adaptor or the equivalent into each spark plug hole in cylinder head.
Crank engine until maximum pressure is reached on gauge. Record each cylinder pressure.
Compression should not be less than 880 kPa and not vary more than 25 percent from cylinder to cylinder.
If one or more cylinders have abnormally low compression pressures, repeat the compression test.
If the same cylinder or cylinders repeat an abnormally low reading on the second compression test, it could indicate the existence of a problem with the cylinder in question.
NOTE :
The recommended compression pressures are to be used only as a guide to diagnosing engine problems. An engine
should not be disassembled to determine the cause of low compression unless some malfunction is present.
DIAGNOSIS & TESTING
LTSM020191
02
02–165Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Cylinder Head Gasket Test
•A cylinder head gasket leak can be located between adjacent cylinders, between a cylinder and the adjacent
water jacket or from an oil passage to the exterior of the engine.
• Possible indications of the cylinder head gasket leaking between adjacent cylinders are:
Loss of engine power
Engine misfiring
Poor fuel economy
• Possible indications of the cylinder head gasket leaking between a cylinder and an adjacent water jacket are:
Engine overheating
Loss of coolant
Excessive steam (white smoke) emitting from exhaust
Coolant foaming
Engine Oil Pressure Test
1. Check the engine oil level.
2. Disconnect the oil pressure switch electrical connector.
3. Remove the oil pressure switch.
4. Install the mechanical oil pressure gauge.
5. Start the engine and warm to normal operating temperature.
6. After the engine has been warmed up, check that the oil pressure is within the specifications. Standard Oil Pressure: At 750 ± 50 RPM: 0.8 MPa
7. Stop the engine.
8. Remove the oil pressure gauge.
9. Apply the specified sealant to the thread (1) of oil pressure switch.
10. Install the oil pressure switch (Tighten: Oil pres- sure switch to 10 ± 2 N·m).
DIAGNOSIS & TESTING
LTSM020146
02–166Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Installation Notes:
•Use special tool MD-998442 (1), to depress the plunger several times to exhaust all air from the hydraulic
adjuster.
CAUTION:
The check ball is especially soft, do not push
the check ball too hard or the hydraulic
adjuster will be damaged. When using special
tool MD-998442 (1) the air will be relieved
easily.
•Insert the hydraulic adjusters into the rocker arms.
Insert special tool MD-998443 (1) to prevent drop-
ping the hydraulic adjuster during installation.
• Assemble the rocker shaft springs to the rocker shafts from the upper side of the shaft. Install the rocker shafts
to the cylinder head and install the rocker shaft
bolts and hand tighten only.
CAUTION:
The rocker shaft springs should be installed
first and then install the rocker shaft bolts.
ON-VEHICLE SERVICE
LTSM020083
LTSM020084
LTSM020085
02
02–173Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6. Using special tool MB-991828 or MB-991396 oil fil-ter wrench, remove the oil filter (1).
CAUTION:
When removing the oil filter, ensure that the oil
filter gasket is not stuck to the engine. The oil
filter gasket must be removed from the engine
before installing the new oil filter.
7. Clean the oil filter bracket side mounting surface.
8. Apply a small amount of engine oil to the O-ring ofthe new oil filter.
9. Once the O-ring of the oil filter is touching the flange, use special tool MB-991828 or MB-991396
and tighten the oil filter to 16 ± 4 N·m.
10. Install a new drain plug gasket and then install the oil pan drain plug. (Tighten: Oil pan drain plug to 45 N·m)
11. Refill the engine with the specified quantity and grade of engine oil.
12. Install the oil filler cap.
13. Check the engine oil level.
Installation Notes:
• Clean all surfaces, and verify the oil filter does not leak.
Oil Pan
Removal & Installation
NOTE :
The following special tools are required to perform the repair procedure:
•MD-998727 - Oil Pan Remover
1. Remove the oil dipstick.
2. Raise and support the vehicle.
3. Remove the oil pan drain plug (2) and drain the engine oil.
(Tighten: Oil pan drain plug to 45 N·m)
4. Remove the oil pan (3) retaining bolts (1). (Tighten: Oil pan bolts to 18 N·m)
ON-VEHICLE SERVICE
LTSM020193
LTSM020192
02
02–213Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Oil Pump
Removal & Installation
1. Remove the engine timing belt (See Engine Timing Belt Removal & Installation in Section 02 Engine).
2. Remove the upper balance shaft timing belt (See Upper Balance Shaft Timing Belt Removal & Installation inSection 02 Engine).
3. Remove the oil filter.
4. Remove the oil filter adapter. (Tighten: oil filter adapter bolts to 11 N·m)
5. Remove the engine front cover.
6. Remove the oil pump drive gear and the driven gear.
7. Remove the oil pump rear cover.
8. Installation is in the reverse order of removal.
Installation Notes:
• Before installing the new oil pump, prime the oil pump by filling the oil pump with engine oil and rotate the oil
pump.
• Align the oil pump timing marks (1).
• Check oil pump side clearance.
1 - Engine Front Cover
2 - Oil Pump Driving Gear
3 - Oil Pump Driven Gear
4 - Oil Pump Rear Cover5 - Oil Pan
6 - Oil Strainer
7 - Oil Filter
8 - Oil Filter Adapter
ON-VEHICLE SERVICE
LTSM020045
LTSM020145
02
02–215Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Disassembly
1. Remove the oil pan.
2. Remove the oil strainer.
3. For each connecting rod/piston assembly to be removed, rotate the crankshaft to the bottom dead center positionfor each cylinder.
NOTE :
Before removing the connecting rod/piston assembly, check the connecting rod side clearance.
1 - Cylinder Block
2 - Crankshaft Thrust Bearing
3 - Upper Crankshaft Bearing
4 - Crankshaft5 - Lower Crankshaft Bearing
6 - Bearing Cap
7 - Bearing Cap Bolt
ENGINE UNIT REPAIR
LTSM020124
02–218Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Inspection
NOTE :
All measurements should be taken with the engine block at room temperature, 21°C.
Engine Block
•Clean cylinder block thoroughly and check all core hole plugs for evidence of leaking.
• Examine block and cylinder bores for cracks or fractures.
• Check block deck surfaces for flatness. Deck surface must be within service limit of 0.050 mm.
Cylinder Bore
• The cylinder walls should be checked for out-of-round and taper with cylinder indicator or equivalent. If the cyl-
inder walls are badly scuffed or scored, the cylinder block should be replaced, and new pistons and rings fitted.
• Measure the cylinder bore at three levels in directions A and B. Top measurement should be 12 mm down and
bottom measurement should be 12 mm up from
bottom of bore.
CYLINDER BORE
Cylinder Size 86.50 - 86.53 mm
Cylinder Cylindrically ≤0.01 mm
Assembly
NOTE :
Cleanliness is extremely important during the engine assembly procedure. Any foreign material, including any mate-
rial created while cleaning gasket surfaces, that enters the oil passages, coolant passages or the oil pan can cause
engine failure.
NOTE :
Assemble all components in their original position.
1. Install the pistons to the connecting rods.
2. Using a piston ring expander, install the piston rings.
3. Assemble all components in the reverse order of disassembly.
ENGINE UNIT REPAIR
LTSM020126
02–220Chery Automobile Co., Ltd.