The easiest way to tighten the hose is from below with a crowfoot wrench and a nice extension in it, I think it is 15 mm, but it has to be a rather slim profile to fit. You can go to the Autozone website and register and look under repair info and it will give you pictures and everything. Someone here can give you the size of the crowfoot, best if a flare for the fitting, but a regular one will do in a pinch. Be very careful starting the new hose, if removed, so you don't strip it, and don't use teflon tape on it, can cause overtightening. It has an o ring to seal it.