I have a bad leak on top of engine under the manifold. I'm sure it's the hose that lays on top or the o rings for the pump. Has anyone had to do this? Can you show me how or point me in the right direction? Maybe even help out? I've watched a ton of videos on it. Doesnt look hard. Need to know which way works and which doesnt. Some show replacement hose and how. Some show doing it a different way. Thanks