unresponsive bearing suddenly became responsive

i had a unresponsive bearing and suddenly it started to get a little responsive so i cleaned it with butane and even if i use the bearing dry it is still even more responsive then my responsive bearing

Take the shields off and look for any major debris. Clean it a bit more perhaps. Also check around on the modification and maintenance page on here.

Does t matter how long I keep it in the butane?

As WHOTH3MAN said read the bearing maintenance sticky