So earlier in the year we had someone installed a new Honda engine on our permagreen magnum. Things haven't been the same. The new engine seems to blow air up the fuel line where it collects in the fuel filter thusly running the unit out of fuel. We can usually run 5-15 minutes and then have to shake the fuel line to get the filter to fill back up and it'll run again. Its not that the fuel cap is not venting because it does the same thing sans fuel cap. I'm almost to the point where I'm going to remove the filter and let it roll without. Any suggestions?