air in fuel system, starting issues.

have changed priming bulb (which was damp with diesel) and fuel hoses (aside from one that goes into the fuel pump) and fitted a non return valve after the fuel filter and before the fuel filter.



still having problems with air getting in somewhere though. is it possible for fuel tank ventilation problems to hold a vacuum and "suck" fuel from the filter through the pump and back into the tank??



this is really starting to pip me off now, just want it sorted.

from the last news http://ift.tt/1ynaCdb

via IFTTT