best guess like others have said bad gas/old gas.
although only 5000 miles due to old gas the plugs more that likely bad.
i would say at least 3 new plugs 1 for each cyl. then remove old gas and put in some premium then hit it with a shot of either buy removing the air filter.
the fuel rail and injectors may be plugged but the shot (actually 2 shots) of either if it comes to life would tell u if it don't run that u have restricted gas.
