Daewoo Nexia

since 1994 of release

Repair and car operation

Deu Neksiya
+ Maintenance instruction
+ Maintenance
- Engine
   2.1. Technical characteristics
   2.2. Greasing system
   2.3. Maintenance and engine repair
   2.4. Compression check
   2.5. Dismantle and engine installation assembled
   2.6. Engine support
   2.7. Inlet collector and laying
   2.8. Final collector and laying
   2.9. Cover of the case of a cam-shaft
   2.10. Pulley of a cranked shaft
   2.11. Forward cover of a gear belt
   2.12. Camshaft cogwheel
   2.13. Cogwheel of a cranked shaft
   2.14. Back cover of a gear belt
   2.15. Adjustment of a tension of a gear belt
   2.16. Verification of the angular provision of a camshaft
   2.17. Forward consolidation of a cranked shaft
   2.18. Camshaft. Levers. Hydrojacks of gaps
   2.19. Klapannye of a spring. Consolidations of cores of valves
   2.20. Head of cylinders. Camshaft case
   2.21. Repair of a head of the block of cylinders
   2.22. Dismantle of valves
   2.23. Directing plugs of valves
   2.24. Expansion of openings of plugs
   2.25. Valves
   2.26. Klapannye of a spring
   2.27. Saddles of valves
   2.28. Consolidations of valves
   2.29. Height of a core of the valve concerning a head of the block of cylinders
   + 2.30. Pushers of valves with hydrojacks of gaps
   2.31. Oil pallet
   2.32. A reception branch pipe with the oil filter
   2.33. Oil pump
   2.34. Repair of the oil pump
   2.35. Pistons and rods
   2.36. Flywheel. Back consolidation of a cranked shaft
   2.37. Cranked shaft
   2.38. Rods and radical bearings
   2.39. Replacement of loose leaves
   2.40. Piston group and rods
   2.41. Piston fingers and rings
   2.42. Block of cylinders
   2.43. Installation of pistons
   2.44. Disk balancing with a gear wreath
   2.45. Repair of carving openings
   - 2.46. Diagnostics of malfunctions of the engine
      2.46.1. Diagnostics of malfunctions of mechanisms of the engine
      2.46.2. Diagnostics of malfunctions on noise and knocks
+ 3. Engine (two top camshafts)
+ cooling System
+ Toplevnaya and exhaust systems
+ Electric chain
+ 7. Ignition system
+ 8. Electronic control unit and sensors
+ Transmission
+ 10. Five-speed transmission and main RPO MM5 broadcast
+ 11. Automatic Transmission
+ Steering
+ Running gear
+ 14. Forward suspension bracket
+ 15. Drive of forward wheels
+ 16. Back suspension bracket
+ Brake system
+ Body
+ Heating, ventilation
+ Electric equipment


2.46.1. Diagnostics of malfunctions of mechanisms of the engine


Below typical malfunctions of mechanisms of the engine and their possible reasons are described. After failure detection it is necessary to eliminate its reason, having performed the corresponding works on adjustment, repair or replacement of details and knots.

Big consumption of engine oil

– Leak of oil from the engine. To tighten bolts and/or to replace laying and consolidations.
– The wrong definition of level of oil on щупу. To check oil level on the car established on a horizontal platform after oil will flow down in the pallet.
– Application of unrecommended engine oil. It is necessary to use the engine oil which viscosity on classification of SAE corresponds to prevailing service conditions of the car (a range of temperatures of air).
– The forced modes of operation of the car, for example, on high speeds and trailer towage naturally lead frequent movement to increase in a consumption of oil.
– Malfunction of system of compulsory ventilation (SPV) of a case of the engine.
– Wear of consolidations of cores of valves and/or directing plugs. To develop plugs for the repair size and to establish new valves with the increased diameter of a core and/or to replace consolidations.
– Breakage or wear of piston rings, zakoksovyvaniye of rings. To replace faulty rings, to clean rings and flutes.
– Wrong installation of pistons.

Low pressure of oil

– Small frequency of rotation of a cranked shaft idling engine. To adjust idling turns.
– Malfunction of the sensor of pressure of oil.
– Malfunction of the index of pressure of oil. To replace the index.
– Insufficient viscosity of oil or oil pollution by impurity. To replace engine oil with recommended brand for prevailing service conditions of the car. To merge polluted by fuel or cooling liquid oil and to fill in fresh.
– Wear or pollution of the oil pump.
– Zabivaniye of the oil filter.
– Weakening of fastening or zabivaniye of the reception oil filter.
– An opening in a reception branch pipe of the oil pump.
– Wear of loose leaves of bearings. To replace loose leaves if necessary.
– Cracks, a time in walls of oil channels or a zabivaniye of oil highways. To repair or replace the block of cylinders.
– Absence or wrong installation of caps of oil channels. To establish caps.

Engine overheat

– Leakage of cooling liquid, leak in system of cooling of oil, malfunction of a broad tank. To check system on existence of leaks and to eliminate malfunctions. To check serviceability of a broad tank, hoses and a radiator cover.
– Proskalzyvaniye or rupture of a driving belt. To replace a natyazhitel or a belt.
– The thermostat is faulty (is constantly closed). To check the thermostat and to replace if necessary.
– The electric fan is faulty.
– Laying of a head of the block of cylinders is faulty. To check and if necessary to replace.

The signaling device of pressure drop of oil is included at operation of the engine idling

– Oil highways and/or highways of a cooler of oil are littered. To clean highways.
– Low pressure of the oil pump.