Fuel seepage between the feed fuel hose and the engine fitting can result in free fuel in the engine compartment, which could result in a fire when exposed to a source of ignition.
Fuel System, Gasoline — Delivery — Hoses, Lines/Piping, And Fittings
Feed fuel hoses can harden and "set" over time, allowing a seepage of fuel at the connection between the hose and the engine fitting. The clamp used to hold the hose to the fitting is unable to compensate for the hardening of the feed fuel hose.
