on my 1991 Islander 4.3L v6. trying to change my water/fuel separating filter. I cant seem to get it off! I know that I am trying to remove it in the correct direction. I loosened up one of the bolts that I thought my release some of the pressure? don't know if that is what it is for but some fuel started coming out. I tried removing the filter using a filter wrench even and it wouldn't budge. Am I not doing something correctly? I have heard that some will punch a hole through a filter and insert a screwdriver to help remove it..but, with this being fuel and I don't know if that is a good idea. also, if and when I do get the filter loosened up, should I expect fuel to come flowing out of it?