Removing unleaded fuel filler restrictor

[GQGasPig]

Hi All,

Got a '91 dual fuel LWB GQ. Filling the petrol tank can sometimes take ages and the bowser clicks off alot which slows the filling process down a fair bit as I have to trickle the petrol in to make sure I have maxed the tank with fuel.

I notice that in the throat of the fuel filler is a restrictor with a spring loaded flap from the bad old days when we used to have leaded and unleaded which I believe is there to prevent leaded being used to fill the tank. I think this may be part of the problem when filling the tank.

Does anyone know how hard this is to remove and if my theory about removing it will make filling easier sound fair?

Cheers
GQ GasPig

[awill4x4]

I've got a 92 version with the same problem but I don't believe it's related to the ULP fuel filler neck. I think the problem is the convoluted path the hose takes from the neck to the tank and fuel simply backs up the hose and clicks off the bowser.
It could also be a breather problem, if the tank is relying on the filler neck assembly to breathe then you're trying to push fuel into a constricted space and it will back up the hose there also.
Regards Andrew.

[GQGasPig]

Thanks Andrew,

I just thought I would ask. You know what they say the only stupid question is the one you don't ask.

My thought is if you remove the restriction it will breathe better while filling.

Cheers
Mark

[pongo]

maybe easier and quicker to buy a diesel filler and swap.

Its also another defect to add to the pile if you get caught without the restricter

[chimpboy]

I've got a 92 version with the same problem but I don't believe it's related to the ULP fuel filler neck. I think the problem is the convoluted path the hose takes from the neck to the tank and fuel simply backs up the hose and clicks off the bowser.
It could also be a breather problem, if the tank is relying on the filler neck assembly to breathe then you're trying to push fuel into a constricted space and it will back up the hose there also.
Regards Andrew.

I'd agree with this. The hose takes a sharp turn soon after the filler as a result of the dual fuel setup, and this means that instead of flowing freely the fuel coming out of the pump hits that corner and half of it tries to splash backwards.

I have the same issue. If you do swap the filler and it helps let us know

[Madmac]

I've got a 92 version with the same problem but I don't believe it's related to the ULP fuel filler neck. I think the problem is the convoluted path the hose takes from the neck to the tank and fuel simply backs up the hose and clicks off the bowser.
It could also be a breather problem, if the tank is relying on the filler neck assembly to breathe then you're trying to push fuel into a constricted space and it will back up the hose there also.
Regards Andrew.

I'd agree with this. The hose takes a sharp turn soon after the filler as a result of the dual fuel setup, and this means that instead of flowing freely the fuel coming out of the pump hits that corner and half of it tries to splash backwards.

I have the same issue. If you do swap the filler and it helps let us know

i disagree, when i ute chopped my wagon i shortened the filler hose considerably it now goes more or less in a dead straight line and its still a bastard to fill