I have a 1992mazda 929 and it has at leat 270,000 miles on it . I would like to know why there is white smoke coming from mytail pipe while idling and when I put it in reverse when backing into my driveway. Does anyone have an idea what this might be. Please leave getback to me and thanks for the time to look at my question!

 

redman3170, although it may not be exactly your case, pleasecheck this http://www.asashop.org/autoinc/sept99/techtips.htm