One of the most common problems with older Vacupack type machines, are that when they are stored , they are not put into the storing position. The gaskets are resiliant, but after a while, they do need replacing. I am assuming that you ran some HOT soapy water through a bag, thus drawing the liquid through the bag line, and into the pump? If you did so, you know that your lines are clear and the pump is pumping out the liquid. Then follow up with some vinyl cleaner, like armoral, you know the stuff that you use to shine your dashboard. If all that is done, you should replace your gasket. That is probally the only other thing it could be,Here is a thread giving you a source for the gasket material.http://www.smokingmeatforums.com/for...739#post444739
I am assuming that you have the snorkel type Vacupack?REMEMBER. FOLKS AT HOME, DO NOT TRY RUNNING LIQUID THROUGH YOUR NEWER TYPE FOODSAVERS, THIS WILL KILL THEM !!!!!!!