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7-4-proverka-sistemy-vpryska-topliva.html
7.4. Check of system of injection of fuelIn system of injection of fuel it is independently possible to check up only the basic electric chains.
If normal work of the engine is broken, first of all check up a condition of electric conducting and sockets. Check up a condition of a filtering element of the air filter, and also a condition and an interelectrode backlash of spark plugs. Check up serviceability of hoses of ventilation картера the engine and adjustment of a cable of an accelerator. If the engine still continues to work unstably, check up a compression in engine cylinders.
Check up work of a fuel atomizer, if necessary clean it.
If the engine still works unstably, check up elements of system of ignition.
If malfunction is not eliminated, check up an integrity of fuses and a condition of electric sockets and electroconducting. On electric sockets there should not be melted off contacts, a moisture, a dirt, traces of corrosion and other damages.
After carrying out of independent check address on specialised station for diagnostics of system of injection of fuel on the special equipment.
The arrangement of elements of systems of ignition and injection of fuel of the six-cylinder engine is resulted in drawing 4.1–1, eight-cylinder – on fig. 4.1–2.
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Fig. 4.1–1. An arrangement of elements of systems of ignition and fuel injection in a motor compartment of cars with six-cylinder engines: 1 – switchboard N122; And – a 3-contact socket of dark brown colour, for primary chains of coils of ignition; B – a 4-contact socket of brown colour from the management block; 2 – the block of engine management J192; 3 – electric sockets: And – black colour, 2 - contact from a ljambda-gauge heater; B – 1-contact from the ljambda-gauge; C – 3-contact brown colour, from the switchboard; D – 2-contact dark blue colour, from the detonation gauge; E – 3-contact white colour, for a food of coils of ignition; 4 – a diagnostic socket; 5 – a potentiometer throttle заслонки with switch G69; 6 – electric sockets: And – 2-contact black colour, for a ljambda-gauge heater; B – 1-contact, from the ljambda-gauge; C – 2-kontaktaktnyj dark blue colour, from the detonation gauge; D-3-kontaktaktnyj grey colour, from the gauge of frequency of rotation; E – 3-contact black colour, from the gauge of installation of a corner of an advancing of ignition; 7 – the gauge of temperature of cooling liquid G62; 8 – the gauge of Hall G40; 9 – the gauge of frequency of rotation G28; 10 – the gauge of installation of a corner of an advancing of ignition G4; 11 – the gauge of detonation G66; 12 – ignition coils; 13 – atomizers; 14 – a wire of connection with "weight"; 15 – a measuring instrument of the expense of air G70; 16 – the electromagnetic valve of 1st adsorber N80; 17 – the gauge of detonation G61; 18 – a regulator of pressure of fuel; 19 – ljambda-gauge G39; 20 – the relay of fuel pump J17; 21 – the valve of stabilisation of frequency of rotation of idling N71; 22 – a wire of connection with "weight"; 23 – the valve of switching of inlet collector N156; 24 – ljambda-gauge G108
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Fig. 4.1–1. An arrangement of elements of systems of ignition and fuel injection in a motor compartment of cars with six-cylinder engines: 1 – switchboard N122; And – a 3-contact socket of dark brown colour, for primary chains of coils of ignition; B – a 4-contact socket of brown colour from the management block; 2 – the block of engine management J192; 3 – electric sockets: And – black colour, 2 - contact from a ljambda-gauge heater; B – 1-contact from the ljambda-gauge; C – 3-contact brown colour, from the switchboard; D – 2-contact dark blue colour, from the detonation gauge; E – 3-contact white colour, for a food of coils of ignition; 4 – a diagnostic socket; 5 – a potentiometer throttle заслонки with switch G69; 6 – electric sockets: And – 2-contact black colour, for a ljambda-gauge heater; B – 1-contact, from the ljambda-gauge; C – 2-kontaktaktnyj dark blue colour, from the detonation gauge; D-3-kontaktaktnyj grey colour, from the gauge of frequency of rotation; E – 3-contact black colour, from the gauge of installation of a corner of an advancing of ignition; 7 – the gauge of temperature of cooling liquid G62; 8 – the gauge of Hall G40; 9 – the gauge of frequency of rotation G28; 10 – the gauge of installation of a corner of an advancing of ignition G4; 11 – the gauge of detonation G66; 12 – ignition coils; 13 – atomizers; 14 – a wire of connection with "weight"; 15 – a measuring instrument of the expense of air G70; 16 – the electromagnetic valve of 1st adsorber N80; 17 – the gauge of detonation G61; 18 – a regulator of pressure of fuel; 19 – ljambda-gauge G39; 20 – the relay of fuel pump J17; 21 – the valve of stabilisation of frequency of rotation of idling N71; 22 – a wire of connection with "weight"; 23 – the valve of switching of inlet collector N156; 24 – ljambda-gauge G108
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Fig. 4.1–2. An arrangement of elements of systems of ignition and fuel injection in a motor compartment of cars with eight-cylinder engines: 1 – the switchboard of coils of ignition N122, N192; 2 – the block of engine management J220; 3 – an element of fastening of the relay and fuses; the relay of power supplies of system Motronic J271; the relay of immobilizer J341; 4 – electric sockets of ljambda-gauge G39 and ljambda-gauge Z19 heater; 5 – ljambda-gauge G39 with heater Z19; 6 – the gauge of temperature of cooling liquid G62; 7 – the gauge of temperature of air G42 arriving in the engine, 8 – a potentiometer throttle заслонки G69, united with the switch of idling F60; 9 – the valve of stabilisation of frequency of rotation of idling N71; 10 – the gauge of frequency of rotation of engine G28; 11 – an electric socket of ljambda-gauge G108 and heater Z28; 12 – an electric socket of the gauge of frequency of rotation of engine G28; 13 – ljambda-gauge G108 with heater Z28; 14 – the gauge of Hall G40; 15 – the gauge of detonation G66; 16 – coils of ignition of cylinders 5–8, accordingly N164, N189, N190, N191; 17 – fuel atomizers of cylinders 5–8 accordingly N83, N84, N85, N86; 18 – the air adjusting valve of atomizers N212 (it is established only on cars with engine AKG/AKJ/AKH code (MVEG III) and OBDII; 19 – the valve of switching of inlet collector N156; 20 – the gauge of detonation G61; 21 – atomizers of cylinders 1–4, accordingly N30, N31, N32, N33; 22 – coils of ignition of cylinders 1–4, accordingly N, N128, N158, N163; 23 – the electromagnetic valve of 1st adsorber N80; 24 – a measuring instrument of the expense of air G70 in the top section of the case of the air filter
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