Bleeding the fuel system

[Marks Garage]

Every time I change or remove the fuel filter I bleed the system. But after 200 miles in dies and I have to bleed it again to get it started. Why does it take so long for the air to get up there? After the 2nd bleeding it is fine till I open the system for service.

 

[argve]

200 miles did you type that correctly?

 

[Marks Garage]

Yes 200 miles to get the air up to the bleeder. Or am I sucking air from somewhere else? But it only does this when I open the fuel system to do a repair or change the fuel filter.