Yes I know that lol but if it is not that old due to recent cam chain replacement why cant i re-use the old one, seams silly to buy yet another one if the old one is not even a yr old. I.E can i re-latch the plunger or clamp the tentioner down so it dont fly out. or if it does fly out can it be re-assembled. All the ford mechanics i know cant answer that question just wondered if anyone on here can shed some light. CheeRS