Upcoming In The May 4, 2012 Northwest Herald Dr. Gizmo Column

In tomorrow's Dr. Gizmo column the good doctor handles issues surrounding leaky valves, a rough idle that continued after repairs, a reader has deciding which transmission to install based upon the country of origin in which it was overhauled, another reader deals with which type of lubricant to use, an engine stalls due to a failing sensor and a computer failure likely is coincidence after a routine maintenance service.