Aqua hot leaking fuel, if I remember there was a recall on about your age aqua hot to fix the pump. On a 2000 year plastic coach I had before the bus I had a big oil leak. Took it to aqua hot and they replaced the pump. Aqua hot no longer does service but will porvide a list of those that do. If you remove the control box where the wire plug in it may not be as easy as it looks. There is a lock pin that for me requires some rather hard prying to get the box out. Would offer to come help but am leaving for Denver tomorrow. We live in Montrose, CO. As LOC agrees do not drive the bus on US 550 north out of Durango