The article describes the solution of the problem with overestimated carbon monoxide concentration in exhaust gases of the NK-16ST gas turbine engine by modifying the supplying fuel method in the combustion chamber. The nozzle with jet fuel supply, for which reason the calculation is made and the optimum number of holes and its diameters are determined. The nozzles with twist and jet fuel supply are researched. As a result of the study it is revealed that the jet fuel supply allows to reduce carbon monoxide concentration in exhaust gases of the engine
