I have a homemade 3D printer running on ramps 1.4 When i start a new print and the hotend reaches melting point of PLA, the PLA start coming out of the hotend.
This goes on for as long as the temperature is kept above melting point, without moving the extrusion gear.

The extruder is a bowden type.
Hotend is a J-head.
I am currently using simplify if that makes any difference regarding configuration.

Any ideas what to do to prevent this from happening?