The problem, expressed by such symptoms, is likely to reduce the pressure in the fuel supply system based on the fuel pump. In addition to the pump itself, the pressure on the LADA Kalina fuel line may be a failure of the fuel pressure regulator and a rough clearance filter mounted on the pump body.
The problem may also be caused by a failure of the idling control (RXX) or the throttle position sensor (LAP).
If the symptoms are most pronounced when the engine is warm and while the vehicle is driving normally, the case may be in the oxygen concentration sensors. In total LADA Kalina two such sensors are both located in the exhaust system. Since they are quite expensive, about 1,500 rubles, before changing the sensors, should be addressed to the service for diagnostic purposes. The replacement of oxygen sensors is performed on the pole at 75,000 kilometres.