On the pages of this book, the reader will find comprehensive information about the device, about possible malfunctions of gas fuel systems of any design, about ways to eliminate them and about much-needed adjustment work. Much attention is paid to the description of the functions of the gearbox in various modes of engine operation. In addition to describing long-running and well-proven systems of automotive gas equipment, the book shows the prospect of developing this type of equipment, including the transition to electronic gas injection systems.