Hubitools HU35031 Common Rail Dummy Plug Regulator Set

This set, used in association with the HU35026 Diesel High-Pressure Kit, and will allow the technician to bypass the pump's regulator and measure the pressure to diagnose any regulator or pump issue. After observing the weak pump pressure: Simply remove the regulator and choose the right dummy plug to bypass and seal the port. If the pressure comes back to normal, the regulator causes the loss of pressure. If the pressure stays too low, the pump is defective. This test is recommended by the manufacturer of high-pressure pumps.