Fix it.
what would it cost to fix a leak in a 7.3l fuel heater
Look inside the car above the fuel pump for an access panel. If there is none, you will have to drop the fuel tank to fix the leak if the leak is at the fuel pump. You need to determine exactly where it is leaking.
fix the leak
It would greatly depend on the source of the leak, need more info.
You have to determine the source of the leak then decide on how to fix it.
Gas leak http://www.autozone.com/servlet/UiBroker?UseCase=S001&UserAction=viewSimpleDiagInfo&Parameters=info i am assuming this is a car and not a pickup the gradual leak u have is allowing fuel vapors into trunk of vehicle . fix the gradual fuel leak and u will fix the gas smell inside car as the leak is near rear wheel, u need to fix this if in an emergency your brakes overheat, the gas leak could cause a fire most dangerous situation, not to mention that driving with a gas leak and fuel smell entering car can make you sick ,or even put you to sleep
If your car smells of petrol inside, and you have not been using a petrol-like solvent to clean something inside the car, you probably have a fuel leak and should have the car checked by someone able to detect and fix a leak.
There are innumerable points for the leak, cost for repair will depend on where it is. You can drive the car only if the leak is minor and the temperature gauge shows normal temperature.
You cant
Best bet in any fuel tank leak is to have the tank replaced
You'll first need to determine where the fuel leak is coming from and then replace or repair the leaking component .