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The fuel pump motor started humming, the car (Chevrolet Aveo T250 1.4, 101 hp, F14D4 engine) started to start poorly, especially when cold, one might even say it doesn't start. The pressure in the fuel system with the engine off was zero. I had to replace the fuel pump motor. Replacing the fuel pump motor and the fuel pressure regulator, or as it is also called the fuel pressure valve, helped. After the work done, the fuel pump started working properly, the fuel pressure in the rail returned to normal, cold engine start also returned to normal, the fuel system became serviceable. Other videos on the topic of the fuel system: DISASSEMBLY OF THE FUEL PUMP Chevrolet Aveo T250 engine 1.4 F14D4 • DISASSEMBLY OF THE FUEL PUMP Chevrolet Aveo T25... ERROR P 0171 Chevrolet Aveo T250 F14D4 • ERROR P 0171 Chevrolet Aveo T250 F14D4 MEASURING THE FUEL PRESSURE Chevrolet Aveo T250 engine 1.4 F14D4 • MEASURING THE FUEL PRESSURE Chevrolet Aveo T... VK channel page - https://vk.com/id429581128