A good mechanical fuel pump must pass three tests- - - -volume, pressure, and vacuum. I've been preaching that gospel for 20-something years on this site, and to the best of my knowledge, nobody has ever followed the proper testing procedure on a fuel pump. I've given up on even trying to pass that knowledge on!
Jerry
Jerry, for the couple of times you have helped me out so far, I can see a wealth of knowledge, as someone new to this forum, I appreciate any info passed on, as a side note I always look forward to any response you give
Steve
