[img]uploads/lucky6025/62Z_pcv_valve_picture_1996_3.8_buick.jpg[/img]Hi,after finding the pcv located under map sensor and removing it ,did not find the spring that was supposed to be on top of pcv.My question do all 3.8(3800) 1996 buick lesabre require this spring and if so what does it do?Thanks Bill