Fuel Tank Breather Pipe

[Black Cat]

Hi,

Having refitted my fuel tank in my 1500 Spitfire I can’t remember what, if anything go’s onto the top of the breather pipe. Should there be a hose which go’s somewhere outside the car.

I remember when I built a kit car fitting a non-return valve on to the breather pipe but not sure what goes on the Spitfire.

[Pete Lewis]

just a pipe run down out through the floor /grommet or most  1500 specified a dummy blanking cap  with a vented filler cap 

vented cap has a small hole in its rubber seal 

pete

 

 

[Black Cat]

There is a very small hole in the center of the rubber seal on my filler cap so do you think it is vented, and if so can I block off the vent pipe or should I run a pipe out via the boot floor.  Will need to cut a hole in the boot floor as just recently replaced it.

[Unkel Kunkel]

For UK spec car it would originally capped by a blind - ended short length  of tube( with a vented  petrol cap).

Inevitably this  tube perishes and results in the mysterious petrol smell in the car.

Easiest option is to replace with same or a more permanent answer is a  brass 8mm micro bore central heating stop end. 

[Pete Lewis]

yes vented cap  just cap the breather stub as suggested 

[Black Cat]

Thanks gents