Pressure check (VW Passat B4)

The pressure is checked using a pressure gauge with a nozzle and a tap, which provides measurement of both the flow pressure and the inlet pressure.

Connect the pressure gauge hoses between the dispenser-distributor and the control pressure supply pipeline coming from the control pressure regulator (fig. 2-184). Remove air locks from the pressure gauge hoses. To do this, start the engine, set the pressure gauge valve to the position for monitoring the flow pressure and lower the pressure gauge so that it hangs freely on the hoses.