Pressure in oil tank

[jub_69]

Checked my oil today after letting my bike idle from cold for about 10 minutes when I went to check it I noticed alittle bit of pressure in the oil tank is this normal? My bike is an 07 xb 12

 

[Mark XB12r]

I cant be positive but i have never experienced it, but i would say that the breathers are there to release crank case pressure. if they are clogged i would assume it can build pressure in the tank.

but im not an expert in this area, so if you got nothing to do till someone else chimes in i would say check the breathers

 

[jub_69]

I did a crank case breather mod and I just blew air back threw the lines they seem to be free

 

[Mark XB12r]

Then im not sure why else there would be a pressure increase in the tank... Like i said it may be normal but i never noticed mine do this