Originally Posted by chucky cheese
Good question I always wondered myself. But what I really want to know is why in the tank? Seems it will fail eventually and a lot of work to replace. Why not on the outside with a filter ? Seems crazy.
as the pumps opperate, they heat up. sitting in a tank full of fuel, helps to keep them cool, which helps them run longer before failing. a fuel pump is really a fairly simple device, and will usually last a very long time before it goes out.