306 2002 ex fuel leaking from filler or breather

i can anyone suggest what might be my problem..every time i fill up,
fuel leak’s from the filler spout imediatly as the fuel enters the
spout. and always starts to run from the right bottem weel arch..help
some one suggested it might be the breather

 

You are OVER FILLING the tank, its got to have a breather,so yes it
runnimng down the pipe and all over the wheel and your foot.

 

We had this once when we got our 306 back from an accident repair place.
Filled up the tank, paid, came out and found all the petrol in a pool
under the car with a significant flow coming out from just under the
rear wheel arch.

Garage picked it up again (just caught them at 6pm!) and looked at it
the next day. Apparently the filler pipe neck had split - somewhere
between the spout and the bottom of the tank. There wasn't any work
done on the back (slight front damage) and apparently it wasn't that
uncommon on cars of this age (1998) for the pipes to have split/perished
or something.

Anyway - all fixed - and thought it sounded like what you have.

D

 

Check the rubber elbow where the filler neck joins the tank. A bit of
a sod to change though!