Adjustment of the initial injection pressure

Fuel spray torch

The initial injection pressure is adjusted by installing a gasket under the spring. Increasing the thickness of the gasket increases the injection start pressure, decreasing it reduces it. Changing the gasket thickness by 0.01 mm approximately changes the injection start pressure by 1kg/cm².

A prerequisite for the operation of the nozzle is the quality of the spray. The spray pattern must be uniform across the entire cross-section of the spray cone and the spray must be misty. The start and end of the injection must be clear. For new injectors, injection is accompanied by a sharp sound; for working injectors, the absence of this sound is not a sign of a malfunction.