So i have a little bit of a mystery. So for a while my car has been putting out a little bit of blue exhaust but nothing more. and it is not very often. but in the last couple of days i have noticed what feels like a missing cylinder or a leak in a vaccum tube. When i let out of the gas and just put a toe into it is makes a quiet almost spitting noise and i can feel a slight let up that isn't from me. I just want to do my due diligence and make sure I am not just chasing ghosts. has anyone ever had this problem or know what it could be? Any help would be much appreciated.
