General information about the power system The fuel supply system consists of a fuel tank (capacity 60 l), located at the rear of the vehicle, mechanical fuel pump, carburetor and air filter. The exhaust system...
Fuel pump — check, removal and installation Examination The fuel pump is attached to the cylinder head at the rear of the engine (from the bulkhead of the engine compartment). Structurally, the pump is...
Repair and replacement of fuel lines If it is necessary to replace a metal fuel line tube, use only seamless steel tube, as copper or aluminum tubes are subject to rapid wear from the vibrations that occur...
Fuel tank — removal and installation Warning! Explosive fuel vapors remain in an empty fuel tank, so be careful. Warning! The removed fuel tank must be located away from open flames, sparking devices, open...
Carburetor — removal, inspection and installation Removal and installation Disconnect the wire from the negative battery terminal. Remove the air filter. Disconnect the accelerator cable and cruise control cable from...
Engine crankshaft speed compensator at idle The engine idle speed compensator, available on some models, is designed to automatically increase the engine speed, which decreases under the influence of additional...
Air flap control cable Disconnect the wire from the negative battery terminal. Remove the air filter. Disconnect the choke control cable from the carburetor by loosening the clamp fastening...
Elements of the exhaust system Attention! The parts of the exhaust system are very hot, so touching any of them is allowed only after complete cooling. Take extra care when working near a catalytic...
Multiport fuel injection system (since 1984) Pic. 14.8. Elements of the air supply system of the PBT system: 1 - expansion chamber; 2 - damper; 3 - throttle assembly; 4 - throttle position sensor; 5 - solenoid...
Air valve (since 1984) The air valve is installed in the bypass hose that bypasses the throttle assembly. It has an electric filament coil and a bimetallic spring. When the engine is cold, the...
Fuel pressure regulator (since 1984) If the fuel pressure in the injectors were always constant, then fluctuations in intake manifold vacuum would cause the wrong amount of fuel to be delivered, even if the...
PBT system control unit (since 1984) The PBT system control unit processes information from the sensors and controls the operation of the injectors and the engine warm-up solenoid valve in idle mode. It is...
PBT accelerator cable adjustment (since 1984) Pic. 14.21. PBT accelerator cable: 1 - free play adjustment nuts; 2 – a bolt of adjustment of full throttle opening Make sure that when the accelerator pedal is fully...
Engine warm-up valve adjustment (since 1984) Start the engine and warm it up to normal operating temperature. Stop the engine and connect the tachometer. Pic. 14.24. Scheme of the engine warm-up system of the RVT...
Load Control Valve Adjustment (since 1984) Connect a tachometer to the engine, start and warm up the engine to normal operating temperature. Disconnect the connector from the load control valve. Pic. 14.27. Wire...
Fuel injection system (since 1986) Later models are equipped with an electronic fuel injection system. It consists of three main systems: fuel supply, air supply and electronic control. Special equipment...
Air supply system (since 1986) Pic. 15.12. Air supply system: a - engines without turbocharging; b - turbocharged engines; 1 – smoothing receiver; 2 - bypass solenoid valve; 3 - air flow meter; 4 -...
Electronic control system (since 1986) The electronic control system controls the electronic fuel injection system and other systems through a control unit containing a microprocessor, the so-called EGI unit....
Pressure reduction in the power system (since 1986) Remove the cap from the filler neck of the fuel tank, as a result of which the pressure in it will become equal to atmospheric pressure. On 1986 and 1987 models, remove...
Checking the pressure in the power system (since 1986) To check the pressure in the fuel supply system, a pressure gauge and an appropriate adapter are required to connect to the system. Reduce the pressure in the fuel...
Elements of the fuel supply system (since 1986) Attention! The power system is under pressure. Before disconnecting the elements of the power system, it is necessary to relieve the pressure in the system. To do this,...
Elements of the air supply system (since 1986) Remove the two screws and pull off the rubber boot from the air flow meter connector. Pic. 15.24. Arrangement of pins on the air flow meter connector Turn the key in the...
Pneumatic shock absorber (since 1986) To check the pneumatic shock absorber, press the rod with your finger - it should slowly sink in with a noticeable resistance to the pressing force. When released, the...
Idle speed compensation system (1986 and 1987) Pic. 15.32. Diagram of the idle speed compensation system (1986 and 1987 models): 1 – atmospheric pressure sensor; 2 - intake air temperature sensor; 3 - coolant...