Fuel lines should not have any tension whatever, so you have to do something differently to make it work with even a basic level of safety. Be careful with the routing of your new line - don't let it wave around or it will get its finger in the wringer sooner or later, and don't run it within say 5 cm of anything warm like a cylinder or cylinder head, and not within 10 to 15 cm of the exhaust pipe. Try not to run it down-then-up, or it will collect crud at the low point. It's best by far to follow the original routing.
