Can't believe anyone would accept a fuel leak such as that , or indeed any other. !!!

And actually its not that hot at the back of the aircrafrt, you can spray jet fuel into the tailipe, just aft of the engine exhaust nozzle, for smoke, and the fuel almost certainly won't burn, but fuel is a potential source of fire and its presence in the airframe as a result of a leak is totally unacceptable.

Fuel leaks of any sort should require an immediate shutdown and the leak cured before any further attempt at engine start, pretty basic airmanship !

Regards,

David Gladwin