fuel oil furnace cuts in and out during the pump running at random times. Fuel is 8months old approx. It started doing it at the end of me using it this past spring and is still doing it now that I'm starting to use it again filter is about 1 year old and the furnace worked fine for quite a while after changing the filter. Can someone try to think of some things for me to look into to try to determine what the problem is.