Bleeding Fuel Separator
the switch on the F250 engine water separator is playing up. Separator warning light came in 2 weeks ago and the switch was stuck in closed circuit . No trace of water anywhere. Took it to Mackay Marine but after playing with it it came back to life. Failed again Saturday and had to unplug the switch to get the engine going. Funny thing was that both times was when I was starting the engine in my wheely bin test tank to flush it out after a long day's motoring. He has agreed to change it out this time.
When playing around with the filter I noticed that when running the vapour liquid interface in the separator moves up and down the filter. Pumped up the system with the bulb and cracked the filter to expel the vapour but there is still some left and after a days run, the interface is still visible again.
Question is: do I need to get the vapour out the system?