"Gazelle" Gas-2705>> The engine>> Engines ZMZ-4025,-4026>> Possible malfunctions of the engine
Plausible reason
Way of elimination
1. The engine is not started up
1.1. Infringement of giving of fuel
Mesh filters of the carburettor, the fuel pump or filters of clearing of fuel are littered
To wash out filters in неэтилированном gasoline. To replace the filter of thin clearing of fuel, to wash out filtering element of the filter-sediment bowl
The diaphragm of the fuel pump is damaged or tightness of valves is broken
To replace a diaphragm or valves
Water in filters of rough and thin clearing of fuel or in топливопроводе has frozen
To warm up sediment bowls of filters or топливопровод hot water
It is littered топливопровод
To blow топливопровод compressed air
Заело the valve of giving of fuel поплавковой chambers in the closed position
To wash out the valve in неэтилированном gasoline, to replace a sealing washer
1.2. A poor gas mixture (claps in the carburettor)
Item 1.1 see
It is not closed completely air заслонка
To adjust a drive air заслонки
Jets are littered: main and idling
To wash out and blow jets air
Thinnesses in connections of the carburettor with an inlet pipe and an inlet pipe with a head of the block of cylinders
To tighten fastenings, if necessary to replace linings
Low level of gasoline in поплавковой to the carburettor chamber
To adjust level
Valve jamming рециркуляции the fulfilled gases in open position
To replace the valve рециркуляции
1.3. A rich gas mixture (claps in the muffler)
It is covered air заслонка
To open air заслонку, to blow cylinders, turning a cranked shaft at open throttle заслонках
Tightness of the valve of giving of fuel is broken
To replace a sealing washer of the valve
Tightness of a float is broken
To restore tightness of a float
Air jets of dosing out systems are littered
To wash out jets неэтилированным gasoline and to blow compressed air
The screw of quality of a mix is adjusted on a rich mix
To adjust necessary structure топливовоздушной mixes
The raised level of gasoline in поплавковой to the chamber
To adjust level
1.4. The engine is not started up during cold time
It is not closed air заслонка
To adjust draught of a drive air заслонки. For this purpose to press a pedal of an accelerator and to extend the handle of draught air заслонки. The lever air заслонки to fix on draught in the closed position заслонки
1.5. Malfunctions in ignition system
The ignition coil is faulty
To replace the ignition coil
It is faulty коммутатор*
To replace the switchboard
Absence of reliable contact in a chain of system of ignition
To tighten contacts
The gauge-raspredelitel* is faulty
To replace the gauge-distributor
Gauges of a control system of the engine ** are faulty
To replace gauges
The management block ** is faulty
To replace the management block
2. The engine works unstably
2.1. Faults on small frequency of rotation of a cranked shaft in an idling mode
High or low level of gasoline in поплавковой to the carburettor chamber
To adjust level
Wrong adjustment of idling
To adjust idling system
Water presence in a fuel tank
To merge a sediment
Wrong adjustment of backlashes клапанов*
To adjust backlashes in клапанном the mechanism
Breakdown бегунка, a plastic cover of the coil of ignition or a gauge-distributor cover зажигания*
To replace бегунок, the coil of ignition or a cover of the gauge-distributor of ignition
Негерметичность фланцевых connections of the carburettor, an inlet pipe
To tighten fastenings фланцевых connections, if necessary to replace linings
It is faulty экономайзер compulsory idling
The tube запорного is necessary for connecting devices to a tube located on other party of the case, below a tube of the vacuum-proof-reader. If idling is restored, to repair or replace system of switching-off of giving of fuel. If it will not be restored, to wash out idling channels, to check up tightness заглушек on the carburettor
Deposit on candles
To clear candles
Негерметичность connections of a tube of a vacuum regulator **
To check up and if necessary to eliminate негерметичность
2.2. Faults in one or several cylinders of the engine
Burn-out of a cover of the gauge-distributor зажигания*
To replace a cover
Breakdown of a wire of a high voltage
To replace a faulty wire
Deposit on a candle
To clear a deposit пескоструйным the device
The spark plug does not work
To replace a spark plug
The ignition coil is faulty двухвыводная
To replace двухвыводную the ignition coil
The management block is faulty
To replace the management block
3. The raised toxicity of the fulfilled gases
Points 1.2 and 1.3 see;
Wrong installation of a corner of an advancing зажигания*
To adjust a corner of an advancing of ignition
Deposit on candles, a wrong backlash between electrodes
To clear candles, to adjust a backlash between electrodes
Wrong adjustment of thermal backlashes between valves and коромыслами*
To adjust backlashes in клапанном the mechanism
Негерметичность valves
To grind in valves
Deterioration маслосъемных caps
To replace the worn out caps
Deterioration of tsilindro-piston group
To make engine repair
Негерметичность connections of a tube of a vacuum regulator
To check up and if necessary to eliminate негерметичность
The gauge of absolute pressure ** is faulty
To replace the gauge
4. Deterioration of dynamics of the car (bad приемистость the engine, the engine does not develop a total power)
Incomplete opening throttle заслонок
To adjust a drive throttle заслонок
Point 1.2 see
Infringement of work accelerating нacoca
To wash out a spray and channels of the accelerating pump, to blow compressed air. To check up integrity of a diaphragm
Wrong adjustment of valves газораспределения*
To adjust backlashes of valves газораспределительного the mechanism
Wrong installation of a corner of an advancing зажигания*
To adjust a corner of an advancing of ignition
The air filter is polluted;
To replace filtering element
Position заслонок does not correspond <winter-summer> сезону*
To establish заслонки in the position corresponding to a season
5. The raised expense of gasoline
Points 1.2 and 1.3 see
The air filter is polluted
To replace filtering element
Wrong installation of a corner of an advancing зажигания*
To adjust a corner of an advancing of ignition
Infringement of tightness of the power supply system
To check up tightness топливопроводов, a fuel tank, a stopper of a fuel tank. To eliminate the found out malfunctions
Malfunctions in a car running gear
To check up adjustment of brakes, bearings of naves of forward wheels, pressure of air in tyres
High level of fuel in поплавковой to the chamber
To adjust level
The carburettor is polluted
To wash out the carburettor
Air заслонка remains partially covered
To adjust fastening of draught of a drive air заслонки
Негерметичность connections of a tube of a vacuum regulator
To check up and if necessary to eliminate
6. The engine overheats
The thermostat is faulty
To replace the thermostat
The belt (belts *) a drive of auxiliary units revolves
To adjust a belt tension (belts *)
Later зажигание*
To adjust a corner of an advancing of ignition
Point 1.2 see
The radiator is littered
To wash out cooling system
The gauge of a signalling device of an overheat of a cooling liquid is faulty
To replace the gauge
7. The engine continues to work after ignition deenergizing
Point 6 see
It is applied низкооктановый gasoline
To apply gasoline with recommended октановым number
8. Detonation knocks in the engine
Early зажигание*
To adjust a corner of an advancing of ignition
Нaгaр on walls of chambers of combustion and the bottoms of pistons
To clear chambers of combustion and the bottom of pistons of a deposit
It is applied низкооктановый gasoline
To apply gasoline with recommended active number
9. Low pressure of oil
Contamination or jamming редукционного the valve in open position
To wash out valve details, to clean a nest in the case of the oil pump
The gauge or the index of pressure of oil is faulty
To measure pressure a control manometre and if necessary to replace faulty devices
Engine overheat
To eliminate the overheat reasons
Easing of effort of a spring редукционного the valve
To replace a spring
Deterioration of loose leaves of a cranked shaft
To replace loose leaves
Deterioration of details of the oil pump
To replace the oil pump, заменить* a lining between a cover and the case a thin paper lining
The underestimated or overestimated level of oil in oil картере
To add or merge oil to recommended level under the index
10. The raised expense of oil
Deterioration of piston rings
To replace piston rings
Contamination of system of ventilation картера the engine
To spend service of system of ventilation
Oil leak through epiploons and thinnesses of connections
To replace epiploons and to restore tightness of connections by a tightening or replacement of linings
Destruction маслосъемных caps
To replace маслосъемные caps
11. Knocks in the engine
The big backlashes between коромыслами and valves
To adjust backlashes in клапанном the mechanism
Deterioration of shatunno-piston group
To make engine repair
Deterioration of loose leaves of a cranked shaft
To replace loose leaves
12. Knocks in a forward part of the engine (ЗМЗ-4061, ЗМЗ-4063)
Закусывание плунжера гидронатяжителя chains
To disassemble гидронатяжитель, to establish the reason закусывания and if necessary to replace the worn out details
** For УМЗ-4215, ЗМЗ-4025, ЗМЗ-4026.
** For ЗМЗ-4061, ЗМЗ-4063.



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