Skoda Felicia

Since 1994 of release

Repair and car operation

The owners of cars who are carrying out procedures of routine maintenance of the car it agree the present Management of the schedule resulted in Chapter 1 will be extremely seldom compelled to address to materials of the given Section. Reliability of knots and the components established on modern cars is so high that at timely performance of replacement worn out and failed as a result of ageing of a material of details the probability of their sudden refusal is smallest. Refusals seldom occur spontaneously and usually are a consequence sometimes of long development of defect. In particular, refusal of mechanical components practically always is preceded by occurrence and development of the characteristic symptoms shown at times for many thousand of kilometres of run to an exit of defective knot out of operation. The same components which can fail unexpectedly, usually are not vital for functioning of the basic knots and car systems, or are easily replaced directly on the car in road conditions.

Basic step at revealing of the reason of any refusal is the choice of a point of the beginning of searches. Often the reason appears enough obvious, however in certain cases it is necessary to work, making small investigation. The motorist who has made half-dozen casual checks, replacements and corrections quite has to find out a cause of a failure (or its symptom), however such approach in any way it is impossible to consider chance reasonable, in view of its labour input and aimlessness of expenses of time and means. There is a quiet logic approach to search of the failed knot or a component much more effectively. Necessarily it is necessary to take into consideration all preceding breakage, sometimes insignificant symptoms and guarding signals, such as loss of capacity developed by the engine, change of indications of measuring instruments, occurrence of unusual sounds and smells, etc. Do not forget that failure of such components as safety locks or spark plugs can be only a symptom of the more deeply latent infringement.

More low in the given subsection simple enough scheme of diagnostics of most often happening refusals is resulted. The reasons of infringements and their symptoms are grouped on the basis of their relation to functioning of any concrete unit or system, for example: the Engine, cooling System etc. In brackets are given references to corresponding Chapters and the Sections of the Management concerning functioning of components suspected of malfunction.

Without dependence by nature refusal in a basis of investigation of its reason identical base principles are always put:

Make sure of correctness of definition of symptoms of refusal. This means confidence of delimitation of area of searches that is especially important with the help in refusal diagnostics to other motorist who cannot adequately state symptoms of taking place infringement.

Try not to look through obvious infringements. For example, if the engine is not started, do not hesitate to check up fuel presence in a petrol tank (thus it is not necessary to take on trust statements of the owner of the faulty car). In default electric equipments first of all it is necessary to check up a condition and reliability of fastening клеммных electroconducting connections, only after that it makes sense to get diagnostic devices.

Try to eliminate a cause of a failure, instead of its symptom. Replacement of the discharged battery new will help to make the engine start, however the taking place reason of a discharge of the old battery remains not eliminated that will lead fast failure and new. Also replacement of the spark plugs thrown by oil (petrol models) will allow to restore for some time serviceability of functioning of the engine, however its refusal by all means will soon repeat (if the reason lay not simply in application of candles not that type).

Do not take on trust any statements. Remember that "the new" component also can appear faulty, in particular if it long time has lain in a luggage carrier - it is not necessary to exclude a component from the list checked only for the reason that it is new or is recently established. In case of neglect it is not necessary to be surprised with performance of the made recommendation, when the cause of a failure revealed at last will appear lying on a surface from the very beginning.

Diagnostics of the general engine failures

The engine is not turned at attempt of its start

battery plugs, or ослабло fastening on them of tips of wires (Routine maintenance see the Head) Are oxidised.
the battery (the engine Electric equipment see the Head) Is discharged or faulty.
It is torn off, or electroconducting of a chain of system of start, or ослабло fastening of plugs of contact connections (the engine Electric equipment see the Head) is otherwise damaged.
the traction relay of a starter or the ignition switch (the engine Electric equipment see the Head) Is faulty.
the starter electromotor (the engine Electric equipment see the Head) Is faulty.
a teeth приводной gear wheels of a starter or a flywheel wreath (the engine Electric equipment see the Head) Is broken off or worn out.
the tyre of grounding of the engine, or ослабло it клеммное connection (the engine Electric equipment see the Head) Is torn off.

The engine is turned, however is not started

the fuel tank Is empty.
the battery (the engine is turned too slowly) (the engine Electric equipment see the Head) Is discharged.
battery plugs, or ослабло fastening on them of tips of wires (Routine maintenance see the Head) Are oxidised.
components of system of ignition - petrol models (the engine Electric equipment see the Head) Are humidified or damaged.
installation of a corner of an advancing of ignition (the engine Electric equipment see the Head) Is broken.
It is torn off or electroconducting of a chain of system of ignition, or ослабло fastening of plugs of contact connections - petrol models (the engine Electric equipment see the Head) is otherwise damaged.
spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (Routine maintenance see the Head) is broken.
the preheat system - diesel models (the engine Electric equipment see the Head) Is faulty.
the system of giving of fuel - petrol models (see the Head of the Power supply system) Is faulty.
It is faulty electromagnetic fuel запорный the valve - diesel models (see the Head of the Power supply system).
air has got To the power supply system - diesel models (see the Head of the Power supply system).
mechanical damage of the engine (for example, a camshaft drive) Takes place.

Start of the cold engine is complicated

the battery (the engine Electric equipment see the Head) Is discharged.
installation of a corner of an advancing of ignition (the engine Electric equipment see the Head) Is broken.
battery plugs, or ослабло fastening on them of tips of wires (Routine maintenance see the Head) Are oxidised.
spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (Routine maintenance see the Head) is broken.
the preheat system - diesel models (the engine Electric equipment see the Head) Is faulty.
the system of injection of fuel - petrol models (see the Head of the Power supply system) Is faulty.
the carburettor (see the Head of the Power supply system) Is polluted.
Zaedaet the lever of smooth adjustment of automatics of start - carburettor models (Power supply systems see).
adjustment of turns of idling Is broken, or are incorrectly established throttle заслонки - carburettor models (see the Head of the Power supply system).
functioning запорного the electromagnetic valve of compulsory idling - carburettor models (see the Head of the Power supply system) Is broken.
tightness of assemblage of the carburettor (see the Head of the Power supply system) Is broken.
the cable of a drive throttle заслонки Is damaged by corrosion.
the ignition system - petrol models (the engine Electric equipment see the Head) Is faulty.
Has fallen компрессионное pressure (the Engine see the Head).

Start of the hot engine is complicated

fuel not that type Is filled.
the filtering element of an air cleaner Is polluted, or its passableness (Routine maintenance see the Head) is otherwise broken.
the system of injection of fuel - petrol models Is faulty (see the Head of the Power supply system.
fuel giving in the carburettor (see the Head of the Power supply system) Is broken.
the Carburettor is poured (see the Head of the Power supply system).
the idling system - carburettor models (see the Head of the Power supply system) Is polluted.
functioning запорного the electromagnetic valve of compulsory idling - carburettor models (see the Head of the Power supply system) Is broken.
tightness of the needle valve - carburettor models (see the Head of the Power supply system) Is broken.
tightness of a float - carburettor models (see the Head of the Power supply system) Is broken.
tightness of assemblage of the carburettor (see the Head of the Power supply system) Is broken.
Has fallen компрессионное pressure (the Engine see the Head).
installation of a corner of an advancing of ignition (the engine Electric equipment see the Head) Is broken.

Starter input in gearing is complicated, or accompanied by extraneous noise

a teeth приводной gear wheels of a starter or a flywheel wreath (the engine Electric equipment see the Head the Engine and the Head) Is broken off or worn out.
Oslabli or blurt out bolts of fastening of a starter (the engine Electric equipment see the Head).
internal components of a starter (the engine Electric equipment see the Head) Are worn out or damaged.

The engine is started, but at once глохнет

It is torn off or electroconducting of a chain of system of ignition, or ослабло fastening of plugs of contact connections - petrol models (the engine Electric equipment see the Head) is otherwise damaged.
depression losses on the case of a throttle or the inlet pipeline - petrol models (see the Head of the Power supply system) Take place.
passableness of an injector/is faulty the power supply system - petrol models (see the Head of the Power supply system) Is broken.

Stability of turns of idling is broken

It is blocked filtering элементвоздухоочистителя (Routine maintenance see the Head).
depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (see the Head of the Power supply system) Take place.
spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (Routine maintenance see the Head) is broken.
Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the Engine see the Head).
working ledges of cams of a camshaft (the Engine see the Head) Are worn out.
the tightness of a belt/chain of drive ГРМ (the Engine see the Head) is incorrectly adjusted.
passableness of an injector (ов) / Is broken the power supply system - petrol models (see the Head of the Power supply system) is faulty.
the atomizer () fuel injection - diesel models (see the Head of the Power supply system) Is faulty.

Ignition admissions take place at single turns of the engine

spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (Routine maintenance see the Head) is broken.
Are faulty ВВ wires of spark plugs - petrol models (the engine Electric equipment see the Head).
depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (see the Head of the Power supply system) Take place.
passableness of an injector (ов) / Is broken the power supply system - petrol models (see the Head of the Power supply system) is faulty.
the atomizer () fuel injection - diesel models (see the Head of the Power supply system) Is faulty.
Tresnuta a distributor cover, or in it were formed coal paths - petrol models with a corresponding complete set (the engine Electric equipment see the Head).
Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the Engine see the Head).
Are damaged, worn out or hoses of system of ventilation картера (see the Head of the Power supply system) were disconnected.

Ignition admissions take place at movement on transfer

passableness of the fuel filter (Routine maintenance see the Head) Is broken.
the fuel pump Is faulty, or the pressure developed by it - petrol models (see the Head of the Power supply system) has fallen.
ventilation of a fuel tank Is broken, or gasoline pipe lines (see the Head of the Power supply system) are blocked.
depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (see the Head of the Power supply system) Take place.
spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (Routine maintenance see the Head) is broken.
Are faulty ВВ wires of spark plugs - petrol models (the engine Electric equipment see the Head).
the atomizer () fuel injection - diesel models (see the Head of the Power supply system) Is faulty.
Tresnuta a distributor cover, or in it were formed coal paths - petrol models with a corresponding complete set (the engine Electric equipment see the Head).
the ignition coil - petrol models (the engine Electric equipment see the Head) Is faulty.
Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the Engine see the Head).
passableness of an injector (ов) / Is broken the power supply system - petrol models (see the Head of the Power supply system) is faulty.

Stability of turns of the engine is broken during an acceleration

spark plugs Are worn out or damaged, or installation of interelectrode backlashes - petrol models (Routine maintenance see the Head) is broken.
depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (see the Head of the Power supply system) Take place.
the carburettor (see the Head of the Power supply system) Is polluted.
jets - carburettor models (see the Head of the Power supply system) are incorrectly established.
adjustment of turns of idling - carburettor models (see the Head of the Power supply system) Is broken.
serviceability of functioning of the accelerating pump of the carburettor (see the Head of the Power supply system) Is broken.
tightness of assemblage of the carburettor (see the Head of the Power supply system) Is broken.
position throttle заслонки chambers of II carburettor (see the Head of the Power supply system) is incorrectly adjusted.
tightness of the vacuum amplifier chambers II Is broken, or the cable not - carburettor models (see the Head of the Power supply system) is established that length.
passableness of an injector (ов) / Is broken the power supply system - petrol models (see the Head of the Power supply system) is faulty.
the atomizer () fuel injection - diesel models (see the Head of the Power supply system) Is faulty.

The engine spontaneously глохнет

depression losses on the throttle case, the inlet pipeline or through connecting hoses - petrol models (see the Head of the Power supply system) Take place.
passableness of the fuel filter (Routine maintenance see the Head) Is broken.
the fuel pump Is faulty, or the pressure developed by it - petrol models (see the Head of the Power supply system) has fallen.
ventilation of a fuel tank Is broken, or gasoline pipe lines (see the Head of the Power supply system) are blocked.
passableness of an injector (ов) / Is broken the power supply system - petrol models (see the Head of the Power supply system) is faulty.
the atomizer () fuel injection - diesel models (see the Head of the Power supply system) Is faulty.

Capacity developed by the engine has fallen

adjustment клапанных backlashes - l models 1.3 (Routine maintenance see the Head) Is broken.
the belt/chain of drive ГРМ is incorrectly established, or adjustment of effort of its tension (the Engine see the Head) is broken.
passableness of the fuel filter (Routine maintenance see the Head) Is broken.
the fuel pump Is faulty, or the pressure developed by it - petrol models (see the Head of the Power supply system) has fallen.
the carburettor (see the Head of the Power supply system) Has iced over.
jets - carburettor models (see the Head of the Power supply system) are incorrectly established.
serviceability of functioning of system of enrichment of an air-fuel mix Is broken at full loading of the engine - carburettor models (see the Head of the Power supply system).
tightness of a float of the carburettor (see the Head of the Power supply system) Is broken.
adjustment throttle заслонки chambers of II carburettor (see the Head of the Power supply system) Is broken.
tightness of the vacuum amplifier chambers II Is broken, or is established приводной a cable not that length - carburettor models (see the Head of the Power supply system).
installation of a corner of an advancing of ignition (the engine Electric equipment see the Head) Is broken.
Has fallen, or it is non-uniformly distributed between cylinders компрессионное pressure (the Engine see the Head