| The 'breather' tube you mention is actually an overflow or drain tube. A drain for rain if you will. I had an interesting incident some years ago..I'd just filled up at a garage and as I walked away to pay I noticed petrol pouring outa the drain tube and all over the forecourt. I hastily tied a knot in it to avert a calamity. After scatching my block for a few minutes in perplexed bewilderment, I decided to leave it, got on and set off to where I was going (Cadwell). Half an hour later my leathers were sodden with petrol, which was coming up around the filler cap. Indeed, I was highly flammable. A bit of investigation revealed the cause: the drain tube that runs from the filler cap to the bottom of the tank had perished, causing fuel to pour out. After tying a knot in the tube and setting off, the air in the tank must have expanded enough to force the petrol through the split, up the tube, outa the filler and all over me.
zimbo |