5.2.25. Search and elimination of malfunctions

Search and elimination of malfunctions of fuel system

Sign
Probable cause
Elimination method
The engine is not started The bent shaft of the engine is turned by a starter slowly Repair system of start of the engine or charge the rechargeable battery so that the starter turned a bent shaft of the engine with a frequency at least 150 min.-1
There is no tension in the tire of food of candles of an incandescence If the control lamp does not show tension at turn of a key in the ignition lock in the provision of "ON", check the relay and a condition of an electrical wiring
The glow plug is faulty Check and, if necessary, replace a spark plug
Air in fuel system Remove air from fuel system
The fuel pump does not give fuel If fuel does not move, in the course of start of the engine weaken fastening of a tube of supply of fuel to a nozzle, check a gear belt and supply of fuel from the fuel filter
Fuel tubes are incorrectly connected Correctly connect fuel tubes
The fuel injection moment is incorrectly adjusted Adjust the fuel injection moment
The nozzle is faulty Check and, if necessary, replace a nozzle
Mechanical part of the engine is faulty Check a compression and, if necessary, repair the engine
The fuel pump is faulty Try to start the engine with the new fuel pump and, if necessary, replace the pump. Check and, if necessary, adjust the frequency of rotation of a bent shaft of the engine idling
Frequency of rotation of a bent shaft idling wrong, rough or unstable The hose of supply of fuel from the fuel filter to the fuel pump is untight Reliably fix a hose
Air in fuel system Remove air from fuel system
Insufficient supply of fuel in connection with pollution of the fuel filter or a tube of return of fuel, leak from a tube of supply of fuel to a nozzle, an excess of a tube or perezhatiy connections of tubes Examine and, if necessary, replace tubes and hoses or replace the fuel filter
The nozzle is faulty Check and, if necessary, replace a nozzle
The fuel injection moment is incorrectly adjusted Adjust the fuel injection moment
Mechanical part of the engine is faulty Check a compression and, if necessary, repair the engine
The fuel pump is faulty Try to start the engine with the new fuel pump and, if necessary, replace the pump. Check and, if necessary, adjust the frequency of rotation of a bent shaft of the engine idling
Engine overload at the movement on high transfer Observe the correct speeds of the movement
Smoky exhaust (black, blue or white color) The engine does not get warm up to the normal working temperature Check and, if necessary, replace the cooling system thermostat
Inappropriate maximum frequency of rotation of a bent shaft of the engine Check and, if necessary, replace the fuel pump
Sprays of nozzles are faulty Check and, if necessary, repair or replace fuel nozzles
The fuel injection moment is incorrectly adjusted Adjust the fuel injection moment
Capacity of system of production of the fulfilled gases is limited Check system of production of the fulfilled gases for lack of dents
Mechanical part of the engine is faulty Check a compression and, if necessary, repair the engine
The fuel pump is faulty Try to start the engine with the new fuel pump and, if necessary, replace the pump. Check and, if necessary, adjust the frequency of rotation of a bent shaft of the engine idling
Engine capacity, insufficient acceleration of the car is reduced (the speedometer is serviceable, coupling does not slip) Inappropriate maximum frequency of rotation of a bent shaft of the engine Check and, if necessary, replace the fuel pump
The air filter is polluted Clear or replace the air filter
Insufficient supply of fuel in connection with pollution of the fuel filter or a tube of return of fuel, leak from a tube of supply of fuel to a nozzle, an excess of a tube or perezhatiy connections of tubes Examine and, if necessary, replace tubes and hoses or replace the fuel filter
Air in fuel system Remove air from fuel system
Sprays of nozzles are faulty Check and, if necessary, repair or replace fuel nozzles
The fuel injection moment is incorrectly adjusted Adjust the fuel injection moment
Mechanical part of the engine is faulty Check a compression and, if necessary, repair the engine
The fuel pump is faulty Try to start the engine with the new fuel pump and, if necessary, replace the pump. Check and, if necessary, adjust the frequency of rotation of a bent shaft of the engine idling
The increased fuel consumption The air filter is polluted Clear or replace the air filter
Fuel leak Check and, if necessary, replace or delay connections of fuel tubes
Capacity of tubes of return of fuel is limited Check a tube of return of fuel for lack of dents and perezhatiya. Replace the damaged tubes. If the tube is hammered, blow it compressed air, then remove air from fuel system
Sprays of nozzles are faulty Check and, if necessary, repair or replace fuel nozzles
Mechanical part of the engine is faulty Check a compression and, if necessary, repair the engine
The fuel pump is faulty Try to start the engine with the new fuel pump and, if necessary, replace the pump. Check and, if necessary, adjust the frequency of rotation of a bent shaft of the engine idling
The engine does not stop Operability of the starting switch is broken Repair or replace the starting switch
Damage of an electric chain between the starting switch and the fuel solenoid Replace an electrical wiring

Search and elimination of malfunctions of system of start of the engine

Malfunction
Probable causes
Elimination method
The bent shaft of the engine is not turned by a starter The rechargeable battery is discharged Load or replace the battery
Unreliable connection of wires to plugs of the rechargeable battery Reliably fix wires on plugs of the rechargeable battery
The blocking switch on cars with the automatic transmission is faulty Adjust situation or replace the switch
The fusible insert fused Replace a fusible insert
The starter is faulty Repair a starter
The nozzle is faulty Replace a nozzle
The bent shaft of the engine is turned by a starter slowly The rechargeable battery is insufficiently charged Charge the battery
Unreliable connection of wires to plugs of the rechargeable battery Reliably fix wires on plugs of the rechargeable battery
The starter is faulty Repair a starter
The starter continues to work after start of the engine The starter is faulty Repair a starter
Nespraven ignition lock Repair or replace the ignition lock
The starter works with high frequency rotations, but does not turn a bent shaft of the engine Short circuit in an electric chain Restore an electric chain
Teeths of a gear wheel are broken or the starter is faulty Repair a starter
Teeths of a gear wreath of a flywheel are broken Replace a gear wreath of a flywheel

Search and elimination of malfunctions of the fuel tank and fuel-supply lines

Sign
Probable cause
Elimination method
Unstable operation of the engine because of insufficient supply of fuel The fuel pipe or hose of supply of fuel is bent Replace or repair
The fuel supply hose is polluted Clear or replace
The fuel filter is polluted Replace the filter
Water in the fuel filter Replace the fuel filter or clear the fuel tank and fuel-supply lines
The polluted or rusted internal part of the fuel tank Clear or replace
The fuel pump working with failures Replace
When in a combination of devices the control lamp of the fuel filter lights up Water collected in the fuel filter Remove water from the fuel filter as follows:
– turn off an assembly bolt on the fuel filter and lift the fuel filter;
– weaken a drain stopper on the fuel filter;
– when of the fuel filter ceases to go out water, tighten a drain stopper