Originally Posted by Supercharged16v
breather has nothing to do with it. if your tank is empty surely the pump at the petrol station does not fill up in such a way as to close the whole filler diameter of your tank !
The only possible reason I can think of why its doing this is if your rear left wheel caught something and hit the pastic filler tube of your tank, therefore disforming it and taking a longer time for the fuel to go down its throat !
you're quite right that the fuel wouldn't fill the whole pipe once it's going in chris, on an ordinary fuel tank set up, but these are not quite ordinary cars
on other cars the fuel filler pipe goes into the tank near the top of the tank, on the suds/sprints/33 tank it goes in at the bottom so once the fuel gets to almost half full the filler pipe is
full of fuel (at the tank end) so air has to get out of the tank through the breather pipes to allow the fuel in, hence the gurgling as it tries to come up the filler pipe.
there are a few pipes to check, one comes simply from the top of the tank to the top of the filler neck, this alone should allow the air to escape from the tanknear to where the fuel pump nozzle goes in. there is also a vent to air pipe that goes from the same area on the filler neck (as the previous pipe) and just goes back down to sit in the rear cross-member merrily venting air. this also obviously helps for the fuel to be pulled from
the tank by your engines fuel pump, if the air can't get in
the tank then the fuel will be hard to get out.
it also a reason why a few people have had the fuel filler elbow perish and split, it is always full of fuel unless you keep it with the fuel light on
you may find it easier to drop the tank to get at the pipes, not a hard job and then you can take the oportunity to renew the corroded pipes above the tank
of course the above relates to my experience with the sud (& sprint) so i guess the 33 is the same