[New Jersey]

Help! I have been a fairly decent home repairer.After completing use of me Echo Blower, I store it and when I return the next day its hard to start, the air filter is soaked with gasoline. If I remove the air filter and unscrew the gas cap, its starts fine. I found that if I store it with gas cap loose and restart later before tightening the gas cap all is well. Installed new fuel filter, no help.

Any ideas?