My 235 had some problems with old gas which I believe I fixed by cleaning out the lines with forced air, dumping the old gas and flushing the tank twice and changing the fuel filter. I noticed that when back flushing the tank with air, gas came back up the pickup fuel line telling me the tank was tight. I am thinking I am leaking vacuum in the gas lines themselves. Should I replace them? That would be a pain. Could that be the cause because I have run out of other ideas. How would I test that? James Zorn
zorn...@sbcglobal.net
