i just got my 3 ford ranger/ b series my first 2.5 all other where 2.3 but same thing. its a 98 mazda b2500 2.5 2wd auto its the only one i ever had that has a vacuum on the oil cap and i cant for the life of me firgure out why

 

Hi, welcome to the forum. You may find the information you are looking for in the General Technical and Electrical forum. :)

Thanks