2009 CHERY TIGGO fuel pressure

Downloaded from www.Manualslib.com manuals search engine CONDITIONPOSSIBLE CAUSE 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 CAUSE 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
02–88Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Cylinder Compression Pressure Test
•The result of a cylinder compression pressure test can be utilized to diagnose several engine malfunctions.
• 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 necessary.
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 1000 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.
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
DIAGNOSIS & TESTING
02–90Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 6. Drain the cooling system (See Cooling SystemDraining and Filling in Section 06 Cooling).
WARNING!
Always allow the engine to cool before opening the cooling system. Do not loosen the coolant pressure relief
cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and
hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may
result in serious personal injury.
7. Remove the coolant fan & radiator assembly (See Coolant Fan & Radiator Assembly Removal & Installation inSection 06 Cooling).
8. Remove the starter motor wiring.
9. Relieve the fuel pressure (See Fuel Pressure Relief Procedure in Section 04 Fuel Delivery).
10. Disconnect and remove the fuel line at the fuel rail.
11. Remove the air inlet hose and the air cleaner case assembly.
NOTE: For 1.8L engine, disconnect the air flow
sensor electrical connector.
12. Remove the ground cable bolt from the cylinder head.
ON-VEHICLE SERVICE
LTSM020190
LTSM020226
02
02–106Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 13.Disconnectandremovethefollowingelectricalconnectors:
€Coolanttemperaturesensor
€Camshaftpositionsensor
€Ignitioncoil
€Fourfuelinjectors
€Intakemanifoldairpressuresensor(1.6L)
€Airflowsensor(1.8L)
€Carboncanistersolenoidvalve
€Throttlebodycontrol
€A/Ccompressor
€Oilpressuresensor
€Powersteeringpumppressureswitch
€Generator
14.Removethepipefromthecanistercontrolvalve
(1).
15.Disconnecttheheaterhoses(1)onthevehicle.
16.Removethevacuumlinefromthebrakebooster
(2).
17.Removethedipstick.
18.Ifequippedwithamanualtransaxleremovethe
transaxleshiftcable(1).
19.Removethehydraulicpipefromtheclutchslave
cylinder.
ON-VEHICLESERVICE
LTSM020235
BESM020025
BESM080051
02–107CheryAutomobileCo.,Ltd.

Downloaded from www.Manualslib.com manuals search engine Installation Notes:
•Clean all surfaces of manifold and cylinder head.
• Install a new exhaust manifold gasket during installation.
Intake Manifold
Removal & Installation
1. Disconnect the negative battery cable.
2. Remove the engine cover.
3. Drain the cooling system (See Cooling System Draining and Filling in Section 06 Cooling).
WARNING!
Always allow the engine to cool before opening the cooling system. Do not loosen the coolant pressure relief
cap when the engine is operating or the cooling system is hot. The cooling system is under pressure; steam and
hot liquid can come out forcefully when the cap is loosened slightly. Failure to follow these instructions may
result in serious personal injury.
1 - Fuel Rail Bolt
2 - Fuel Rail
3 - Electronic Throttle Control Actuator Bolt
4 - Electronic Throttle Control Actuator
5 - Electronic Throttle Control Actuator Gasket
6 - Air Intake Pressure Temperature Sensor Bolt7 - Air Intake Pressure Temperature Sensor
8 - Intake Manifold Bolt
9 - Intake Manifold
10 - Intake Manifold Bracket
11 - Intake Manifold Gasket
ON-VEHICLE SERVICE
LTSM020164
02–11 7Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine 16. Remove the bolts (2) & (3) securing the engine oildipstick to intake manifold. Remove the dipstick.
(Tighten: Dipstick bracket bolts to 11 N·m)
17. Disconnect the oil pressure switch connector (4).
18. Remove the nuts (1) securing the intake manifold to cylinder head.
(Tighten: Intake manifold nuts to 11 N·m)
NOTE: Replace the manifold gasket.
19. Installation is in the reverse order of removal.
Installation Notes:
• Clean all surfaces of manifold and cylinder head.
• Install a new intake manifold gasket during installation.
• Install new O-rings on the fuel injectors.
Idler Pulley
Removal & Installation
1. While using a suitable tool and securely holding the hexagonal portion of the drive belt tensioner, rotate the
pulley counterclockwise to loosen the drive belt.
WARNING!
Avoid placing hands near the drive belt tensioner while it is being held.
2. Remove the drive belt.
Upper Accessory Drive Belt Idler Pulley (1)
• Remove the bolt and the upper accessory drive
belt idler pulley.
(Tighten: Upper idler pulley bolt to 45 N·m)
Lower Accessory Drive Belt Idler Pulley (2)
• Remove the bolt and the lower accessory drive belt
idler pulley.
(Tighten: Lower idler pulley bolt to 45 N·m) 3. Installation is in the reverse order of removal.
Oil Filter
Removal & Installation
NOTE :
The following special tools are required to perform the repair procedure:
• CH-10003 - Oil Filter Remover
CAUTION:
When servicing the oil filter, avoid deforming the filter by installing the special tool against the
base of the filter.
ON-VEHICLE SERVICE
LTSM020223
LTSM020203
02–11 9Chery Automobile Co., Ltd.

Downloaded from www.Manualslib.com manuals search engine Torque Specifications
CAUTION:
When torquing a fastener in two steps, DO NOT use a torque wrench for the second step.
DESCRIPTIONTORQUE (N·m)
Alternator Adjusting Bolt 10
Alternator Bracket Bolt 24
Alternator Center Nut 45
Camshaft Position Sensor Bracket 14
Camshaft Position Sensor 10
Camshaft Position Sensor Cylinder 22
Crank Belt Gear 25
Ignition Coil 10
Locking Bolt 22
Spark Piston 25
Water Pump Belt Gear 9
Timing Belt Automatic Tensioner Bolt 24
Belt Gear of Balance Axle 46
Central Belt Wheel Bolt 36
Lower Balance Shaft Bolt 55
Timing Belt Cover Bolts 11
Tensioner Wheel Bolt 49
Tensioner Arm Bolt 22
Tensioner Bracket 49
Timing Belt Indicator 09
Timing Belt Rear Cover 11
Upper Balance Shaft Tensioner Bolt 19
Camshaft Pulley Bolt 90
Crankshaft Pulley Bolt 120
Connecting Bolt of Outflow Pipe 20
EGR Valve 22
Exhaust Manifold Nut (M8) 30
Exhaust Manifold Nut (M10) 50
Fuel Pressure Regulator 9
Fuel Return Pipe 09
Injector and Distribution Pipe 12
Intake Manifold Bolt 20
Intake Manifold Bracket 14
Thermostat Housing Bolt 24
Water Pump Bolts 14
Rocker Cover Bolt 4
Rocker and Camshaft Assembly Bolt 32
Trust Bearing Cover Bolt 19
GENERAL INFORMATION
02–153Chery Automobile Co., Ltd.

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.