To the top of the document
Matiz
To Previous Page To Next Page
GMDE Start Page Load static TOC Load dynamic TOC Help?

SECTION 1A

GENERAL ENGINE INFORMATION

DESCRIPTION AND SYSTEMOPERATION

CLEANLINESS AND CARE

An automobile engine is a combination of many machined, honed, polished and lapped surfaces with tolerances that are measured in the ten-thousandths of an inch. When any internal engine parts are serviced, care and cleanliness are important. A liberal coating of engine oil should be applied to friction areas during assembly, to protect and lubricate the surfaces on initial operation. Proper cleaning and protection of machined surfaces and friction areas is part of the repair procedure. This is considered standard shop practice even if not specifically stated.
Whenever valve train components are removed for service, they should be kept in order. They should be installed in the same locations, and with the same mating surfaces, as when they were removed. Battery cables should be disconnected before any major work is performed on the engine. Failure to disconnect cables may result in damage to wire harness or other electrical parts.

ON-ENGINE SERVICE

Caution : Disconnect the negative battery cable before removing or installing any electrical unit, or when a tool or equipment could easily come in contact with exposed electrical terminals. Disconnecting this cable will help prevent personal injury and damage to the vehicle. The ignition must also be in B unless otherwise noted.

Notice : Any time the air cleaner is removed, the intake opening should be covered. This will protect against accidental entrance of foreign material, which could follow the intake passage into the cylinder and cause extensive damage when the engine is started.

COMPONENT LOCATOR

ENGINE COMPARTMENT (TYPICAL)

(Left-Hand Drive Shown, Right-Hand Drive Similar)


D102A401
Display graphicTranslations of text in graphics


  1. Power Steering Oil Reservoir
  2. Coolant Reservoir
  3. Canister
  4. Canister Solenoid
  5. Manifold Absolute Pressure (MAP) Sensor
  6. Intake Manifold
  7. Ignition Coil
  8. Idle Air Control (IAC) Valve
  9. Throttle Position (TP) Sensor
  10. Throttle Body
  11. Brake Fluid Reservoir
  12. Wiper Motor
  13. Battery
  14. Fuse Box
  15. Air Cleaner Housing
  16. Resonator
  17. PCV Hose
  18. Distributor
  19. Exhaust Manifold
  20. Snorkel
  21. Engine
  22. Washer Fluid Reservoir
  23. Oil Level Gauge
  24. Oil Filler Cap

ENGINE COMPARTMENT (EURO III)

(Left-Hand Drive Shown, Right-Hand Drive Similar)


MAA1A010
Display graphicTranslations of text in graphics


  1. Power Steering Oil Reservoir
  2. Coolant Reservoir
  3. Canister Purge Solenoid
  4. Manifold Absolute Pressure (MAP) Sensor
  5. Intake Manifold
  6. Throttle Position (TP) Sensor
  7. Throttle Body
  8. Idle Air Control (IAC) Valve
  9. Brake Fluid Reservoir
  10. Wiper Motor
  11. Battery
  12. Fuse Box
  13. Air Cleaner Housing
  14. Resonator
  15. Electronic Ignition System Ignition Coil
  16. Exhaust Manifold
  17. Snorkel
  18. Engine
  19. Washer Fluid Reservoir
  20. Oil Level Gauge
  21. Oil Filler Cap

DIAGNOSTIC INFORMATION PROCEDURE

GENERAL DIAGNOSIS

Condition
Probable cause
Correction
Hard Starting (With normal cranking)
Malfunction of Ignition System
  • Faulty fuse.
  • Replace the fuse.
  • Faulty spark plug.
  • Clean, adjust the plug gap or replace.
  • Electric leakage at the high tension cable.
  • Replace the cable.
  • Poor connection of the high tension cable or lead wires.
  • Replace the cable or wires.
  • Worn distributor cap or accumulated carbon in the distributor cap.
  • Replace or clean the distributor cap.
  • Damaged distributor rotor or cap.
  • Replace the rotor or the cap.
  • Improper ignition timing.
  • Adjust the ignition timing.
  • Faulty ignition coil.
  • Replace the ignition coil.
Malfunction of Fuel System
  • Lock of fuel in the fuel tank.
  • Feed the fuel.
  • Dirty or clogged fuel filter.
  • Replace the filter.
  • Clogged fuel pipe.
  • Clean the fuel pipe.
  • Malfunction of the fuel pump.
  • Replace the fuel pump.
  • Malfunction of the fuel injector.
  • Replace the injector.
  • The foreign material in the fuel tank.
  • Clean the fuel tank.
Decline of Compression Pressure
  • Poor tightening spark plug.
  • Tighten to the specified torque.
  • Cracked cylinder head gasket.
  • Replace the gasket.
  • Inadequate the valve clearance.
  • Adjust the clearance.
  • Leakage of the valve clearance.
  • Repair the valve.
  • Interference of the valve stem.
  • Replace the valve or the valve guide.
  • Low elasticity or damage of the valve spring.
  • Replace the valve spring.
  • Abnormal interference of pistons and cylinders.
  • Replace the piston ring.
  • Excessive wear of pistons, rings, or cylinders.
  • Replace the ring or the piston and boring or replace the cylinder.
Hard Starting (With normal cranking)
Others
  • Broken timing belt.
  • Replace the belt.
  • Malfunction of Positive Crankcase Ventilation (PCV) valve.
  • Check and replace Positive Crankcase Ventilation (PCV) valve if needed.
  • Loosening, damage or leakage of the vacuum hose.
  • Connect the hose correctly or replace it.
  • Leakage of intake system.
  • Replace intake system.
Lack of Engine Power
Decline of Compression Pressure
  • Refer to "Page 1A-5".
  • Refer to "Page 1A-5".
Malfunction of Ignition System
  • Improper ignition timing.
  • Adjust the ignition timing.
  • Faulty spark plug.
  • Adjust or replace the spark plug.
  • Malfunction of the distributor.
  • Repair or replace the distributor. Check the rotor.
  • Electric leakage or poor connection of the high tension cable.
  • Connect the cable correctly or replace it.
Malfunction of Fuel System
  • Clogged fuel pipe.
  • Clean the pipe.
  • Clogged or contaminated fuel filter.
  • Replace the filter.
Others
  • Clogged exhaust system.
  • Check and repair the system.
  • Clogged or contaminated air cleaner element.
  • Clean or replace the air cleaner element.
  • Leak of the intake manifold gasket.
  • Replace the gasket.
  • Dragging brakes.
  • Repair or replace the brakes.
  • Slipping clutch.
  • Adjust or replace the clutch.
Rough Engine Idling
Decline of Compression Pressure
  • Refer to "Page 1A-5".
  • Refer to "Page 1A-5".
Malfunction of Fuel System
  • Clogged fuel pipe.
  • Clean the pipe.
  • Clogged or contaminated fuel filter.
  • Replace the filter.
  • Malfunction of the fuel pressure regulator.
  • Replace the regulator.
Malfunction of Ignition System
  • Malfunction of the spark plug.
  • Adjust or replace the spark plug.
  • Electric leakage or poor connection of the high tension cable.
  • Connect the cable correctly or replace it.
  • Worn distributor cap terminal or accumulated carbon in the distributor cap.
  • Replace or clean the distributor cap.
Rough Engine Idling
Malfunction of Ignition System
  • Loosening or damage of the distributor rotor or cap.
  • Replace the rotor or cap.
  • Poor ignition timing.
  • Adjust the ignition timing.
  • Malfunction of the ignition coil.
  • Replace the ignition coil.
Others
  • Clogged or contaminated air cleaner element.
  • Clean or replace the air cleaner element.
  • Leak of the intake manifold gasket.
  • Replace the gasket.
  • Malfunction of Positive Crankcase Ventilation (PCV) valve.
  • Check the valve or replace it if needed.
  • Poor connection or damage or leakage of the vacuum hose.
  • Connect the hose correctly or replace it.
Engine Hesitate (Upon pressing accelerating pedal, the engine makes delayed Response. This situation is remarkable when cruising or starting.)
Decline of Compression Pressure
  • Refer to "Page 1A-5".
  • Refer to "Page 1A-5".
Malfunction of Ignition System
  • Poor ignition timing.
  • Adjust the ignition timing.
  • Poor spark plug or poor adjustment of the plug gap.
  • Replace the plug or adjust the gap.
  • Electric leakage or poor connection of the high tension cable.
  • Connect the cable correctly or replace it.
Others
  • Malfunction of the air cleaner system.
  • Clean or replace the air cleaner system.
  • Leak of the intake manifold gasket.
  • Replace the gasket.
Engine Surging (Engine power makes fluctuation in a fixed speed and speed changes without Operating the accelerating pedal.)
Decline of Compression Pressure
  • Refer to "Page 1A-5".
  • Refer to "Page 1A-5".
Malfunction of Fuel System
  • Clogged fuel pipe.
  • Clean the pipe.
  • Clogged or contaminated fuel filter.
  • Replace the filter.
  • Malfunction of the fuel pressure regulator.
  • Replace the fuel pressure regulator.
Malfunction of Ignition System
  • Malfunction of the spark plug.
  • Adjust or replace the spark plug.
  • Electric leakage or poor connection of the high tension cable.
  • Connect the cable correctly or replace it.
  • Worn distributor cap terminal or accumulated carbon in the distributor cap.
  • Clean or replace the distributor cap.
  • Loosening or damage of the distributor rotor or the cap.
  • Replace the distributor rotor or the cap.
  • Poor ignition timing.
  • Adjust the ignition timing.
Engine Surging (Engine power makes fluctuation in a fixed speed and speed changes without Operating the accelerating pedal.)
Others
  • Leak of the intake manifold gasket.
  • Clean or replace the gasket.
  • Leakage of the vacuum hose.
  • Connect the hose correctly or replace it.
Excessive Detonation (According to the opening range of throttle valve, Knocking sound of metallic is made with abnormal explosion.)
Overheated Engine
  • Refer to "Overheat" in this page.
  • Refer to "Overheat" in this page.
Malfunction of Ignition System
  • Abnormal spark plug.
  • Replace the spark plug.
  • Poor ignition timing.
  • Adjust the ignition timing.
  • Electric leakage or poor connection of the high tension cable.
  • Connect the cable correctly or replace it.
Malfunction of Fuel System Others
  • Clogged or contaminated fuel filter and fuel pipe.
  • Clean or replace the fuel filter and the fuel pipe.
Others
  • Leak of the intake manifold gasket.
  • Replace the gasket.
  • Excessive carbon deposit due to abnormal combustion.
  • Remove the carbon.
Overheat
Malfunction of Cooling System
  • Lack of coolant.
  • Refill coolant.
  • Malfunction of the thermostat.
  • Replace the thermostat.
  • Malfunction of the cooling fan.
  • Check or replace the cooling fan.
  • Poor water pump performance.
  • Replace the pump.
  • Clogged or leaky radiator.
  • Clean, repair or replace the radiator.
Malfunction of Lubrication System
  • Poor engine oil.
  • Replace engine oil with the specified one.
  • Blocking oil filter or strainer.
  • Clean or replace the oil filter or the strainer.
  • Lack of engine oil.
  • Refill oil.
  • Poor oil pump performance.
  • Replace or repair the pump.
  • Leakage of oil.
  • Repair.
Other
  • Damaged cylinder head gasket.
  • Replace the gasket.
Poor Fuel Consumption
Decline of Compression Pressure
  • Refer to "Page 1A-5".
  • Refer to "Page 1A-5".
Malfunction of Fuel System
  • Leakage of the fuel tank or the fuel pipe.
  • Repair or replace the fuel tank or the fuel pipe.
Poor Fuel Consumption
Malfunction of Ignition System
  • Improper ignition timing.
  • Adjust the ignition timing.
  • Abnormal spark plug (Excessive carbon deposit, inadequate gap, burnt electrode).
  • Replace the plug.
  • Electric leakage or poor connection of the high tension cable.
  • Connect the cable normally or replace it.
Malfunction of Cooling System
  • Malfunction of the thermostat.
  • Replace the thermostat.
Others
  • Improperly installed valve.
  • Repair or replace the valve.
  • Slipping clutch.
  • Repair or replace the clutch.
  • Low pressure of tires.
  • Adjust the pressure of tires.
Excessive Consumption of Engine Oil
Leakage of Engine Oil
  • Loosened oil drain plug.
  • Tighten the plug.
  • Loosened oil pan bolt.
  • Tighten the bolt.
  • Loosened oil filter.
  • Tighten the filter.
  • Loosened oil pressure switch.
  • Tighten the switch.
  • Leakage of camshaft front oil seal.
  • Replace the seal.
  • Leakage of crankshaft front oil seal.
  • Replace the seal.
  • Leakage at the cylinder head cover gasket.
  • Replace the gasket.
  • Damage of the cylinder head gasket.
  • Replace the gasket.
Oil Mixing in Combustion Chamber
  • Stuck piston ring.
  • Remove carbon and replace the ring.
  • Worn piston or cylinder.
  • Replace the piston or the cylinder.
  • Worn piston ring or ring groove.
  • Replace the piston or ring.
  • Inadequate position of the piston ring cutting part.
  • Adjust the position.
  • Abrasion or damage of the valve system.
  • Replace the valve system.
Low Oil Pressure
Malfunction of Lubrication System
  • Inadequate oil viscosity.
  • Replace with the specified one.
  • Loosening of the oil pressure switch.
  • Tighten the switch.
  • Lack of engine oil.
  • Refill oil.
  • Blocking oil strainer.
  • Clean the strainer.
Low Oil Pressure
Malfunction of Lubrication System
  • Lowered function of the oil pump.
  • Replace the pump.
  • Abrasion or damage of the oil pump relief valve.
  • Replace the valve.
Engine Noise
  • Valve Noise
  • Inadequate valve clearance.
Adjust the valve clearance.
  • Abrasion of valve stem or guide.
  • Replace the valve stem or the guide.
  • Weak valve spring.
  • Replace the spring.
Piston, Ring, Cylinder Noise
  • Abrasion of the piston, the ring or the cylinder.
  • Boring the cylinder or replace the piston, the ring or the cylinder.
Connecting Rod Noise
  • Abrasion of the connecting rod bearing.
  • Replace the bearing.
  • Loosened the connecting rod nut.
  • Tighten to the specified torque.
Crankshaft Noise
  • Abrasion of the crankshaft bearing.
  • Replace the bearing.
  • Abrasion of the crankshaft journal.
  • Grind or replace the crankshaft journal.
  • Loosened bearing cap bolt.
  • Tighten to the specified torque.
  • Excessive clearance of the crankshaft thrust bearing.
  • Adjust or replace.
  • Low oil pressure.

CHECKING ENGINE FLUID LEVEL

Check the engine fluid level or condition. If needed, refill or replace the oil.
Check the engine oil level within engine normal operating temperature as follows;
  1. After stopping the engine, wait for a few minutes to accumulate oil into the oil pan.
  2. After pulling out the oil level gauge (a), check the oil level.
  3. Clean the oil level gauge and insert the gauge into guide.
  4. After pulling out the oil level gauge again, recheck the oil level and insert the gauge into guide again.

Important : Oil level should be between "MIN" mark and "MAX" mark.

  1. If oil level is below the "MIN" mark, refill engine oil as much as the demanded quantify.

Important : If checking oil level under the engine cold condition, oil is not accumulated into oil pan quickly and correct level checking can not be performed. Therefore, wait until temperature reaches the normal operating condition and check the engine oil level.


D102A301
Display graphicTranslations of text in graphics


CHANGING ENGINE OIL OR OIL FILTER

Tools Required

09915-47341 Oil Filter Wrench.
When checking engine oil level or condition, if needed, change engine oil (including the filter) as follows ;
  1. After stopping the engine, wait for a few minutes to accumulate oil into the oil pan.
  2. Remove the oil filter cap (b).
  3. Remove the oil drain plug (c) and draw oil off.

D102A302
Display graphicTranslations of text in graphics


  1. After drawing oil completely, tighten the oil drain plug to 30-40 N•m (22-30 lb-ft).
  2. Replace the oil filter using the oil filter wrench 09915-47341 (d).

Important : Whenever changing engine oil, replace the oil filter. When replacing new oil filter, apply engine oil on oil filter sealing.


D102A303
Display graphicTranslations of text in graphics


CHECKING ENGINE TIMING BELT

After checking the timing belt for looseness, crack, wear or tension, replace the belt if necessary.

CHECKING ACCESSORY BELT

After checking the alternator belt (e), air conditioning/ power steering belt (f), air conditioning belt (g), power steering belt (h), for looseness, crack, wear or tension, replace the belt if necessary.

D102A304
Display graphicTranslations of text in graphics


CHECKING SPARK PLUG

After checking the spark plug for bad clearance, excessive carbon deposit, worn electrode or damaged insulator, replace the new one if necessary.
Remove and check the spark plug as follows ;
  1. Pull the high tension cable cap portion (i), and disconnect the high tension cable from the spark plug. If pulling the high tension cable (j), circuit could be disconnected. Therefore, the cap portion should be used.

D102A305
Display graphicTranslations of text in graphics


  1. Remove the spark plugs from cylinder head using a wrench.
  2. Measure the spark plug clearance (k) with the filler gauge. If measured value is not within the specified value, adjust the grounding electrode.
When installing new spark plug, check the clearance for equality and install it.

D102A306
Display graphicTranslations of text in graphics


CHECKING AIR CLEANER ELEMENT

If the air cleaner element becomes dirty, engine efficiency could be deteriorated.
Be sure to check the element often.
Especially, if a vehicle frequently runs on a dusty road, check and replace the element often.

CHECKING FUEL FILTER

If fuel filter is used over the specified period, engine efficiency is deteriorated by dust or foreign material.
Therefore, replace a new one within the specified period.

CHECKING FUEL SYSTEM

Check the fuel system as follows ;

CHECKING HOSE SYSTEM

Check the engine vacuum hose, PCV hose or canister hose as follows ;

SPECIFICATIONS

GENERAL SPECIFICATIONS

Application
Description
Vehicle Capacity
Maximum Speed
144 km/h (90 mph)
Gradeability
0.420 tan Θ
Minimum Turning Radius
4.5 m (14.8 ft)
Engine Information
Bore × Stroke
68.5 × 72.0 mm (2.70 × 2.83 inch)
Displacement
796 cm³ (48.6 in³
Compression Ratio
9.3 : 1
Maximum Power
37.5 KW (5,900 rpm)
Maximum Torque
68.6 N•m (50.59 lb-ft) (at 4,600 rpm)
Ignition Timing (Ignition Sequence)
5° BTDC (1-3-2) / 10° BTDC (1-3-2)
Idle Speed
Air Conditioning System (ON)
1,000 ± 50 rpm
Air Conditioning System (OFF)
950 rpm
Engine Part Type
Engine
Overhead Cam L-3
Ignition Type
Direct Ignition System (DIS) / High Energy Ignition (HEI)
Distributor
Optical Sensor Type
Starter
SD 80
Spark-Plug
Unleaded
BPR5EY-11, WR8DCX
Leaded
BPR5EY, WR8DC
Fuel Injection Type
MPI
Fuel Pump
Electric Motor Pump
Fuel Filter
Cartridge
Lubricating Type
Forced Feed Type
Oil Pump
Rotary Pump Type
Cooling Type
Forced Water Circulation
Radiator
Cross - Flow
Water Pump
Centrifugal
Thermostat
Pellet Type
Air Cleaner Element
Non Woven Fablic
Muffler
Catalytic Converter, Closed Circuit
Battery
MF
Engine Part Capacity
Engine Oil
SJ Grade SAE 5W30, SAE 10W30, SAE 15W40
Refrigerant
Four Seasons
Engine Information
Engine Oil
Engine Disassembly
3.0 L (3.17 qt)
Oil Change (Including filter)
2.7 L (2.85 qt)
Oil Change (Not including filter)
2.5 L (2.64 qt)
Oil Level Gauge
1 L (1.06 qt) (MIN to MAX)
Coolant
4.0 L (4.23 qt)
Battery
12V-35 AH, 275 CCA
Generator Generator
65 A
Starter
0.8 kW
Fuel Pump
Output Capacity
90 - 133 Lph
Output Pressure
380 kPa (55.1 Psi)
Fuel Tank Capacity
35 L (9.2 gal), 38 L (10 gal)

ENGINE PERFORMANCE CURVE

  • Maximum Power: 51 PS (37.5 KW) (at 6,000 rpm)
  • Maximum Power: 7 Kg•m (68.6 N•m) (at 4,600 rpm)

D12A101A
Display graphicTranslations of text in graphics




To Previous Page To Next Page
© Copyright General Motors Daewoo Europe. All rights reserved