To obtain precise measurements of fuel pressure, utilizing a pressure gauge is a recommended course of action. The process entails a simple procedure, whereby the gauge is threaded into the fuel pump, a common example being the Danfoss or Delta models. However, if the fuel pump lacks a port, an inline fitting to the boiler must be created in order to accommodate the gauge. This fitting must be installed to appropriate standards to avoid any inaccuracies in the readings obtained.