Fuel Tank Spilling Over

[Greg]

I've noticed that when my fuel tank is fairly full (over 3/4) and I go through corners quickly, petrol is spilling out of the flap and down the side of the car.

Occasionally I also get a fuel smell in the cabin, which is the strongest in the boot (makes sense). This is not correlated with the level of the tank though.

Anyone else have/had similar issues?

Cheers

Greg

[Nathan_G1]

Had major issues with my car.....ended up being the fuel pump and the top seal for the fuel pump housing in the top of the boot under then carpet.......i replaced all my hosing and the fuel filter. spent heaps for just a bloody seal. check your boot and fuel pump area and also check the seal where you fill ur tank and hose to the tank, you might have a crack

[Greg]

Thanks to a pm i receive from grigor (see below) i have fixed my fuel spilling problem. Only took a trip to supercheap auto to get some sikaflex and it is like new. Before when i tightened the fuel cap the restrictor moved a little, now it remains solidly in place, and is goes pshhh when i open it.

here is a copy of his msg:

If the fuel is actually leaking out from the filler area, it's probably not the seal on the bung for the fuel pump access.

It's more than likely a poor compliance when fitting the new filler neck. As part of the comply, they fit an adapter in the filler neck to suit the small diameter bowser fittings of unleaded fuel. It's sealed inside the factory neck with Sikaflex or similar but if it's not done properly, they smell and leak.

A quick check is does it go "whoosh" when you open the cap? If not it's leaking somewhere and thousands of Skylines have this filler neck problem.

It can be fixed by getting it sealed properly and is usually an overnight job to allow the Sikaflex to cure properly.

Edited November 21, 2005 by Greg

[Greg]

Had major issues with my car.....ended up being the fuel pump and the top seal for the fuel pump housing in the top of the boot under then carpet.......i replaced all my hosing and the fuel filter. spent heaps for just a bloody seal. check your boot and fuel pump area and also check the seal where you fill ur tank and hose to the tank, you might have a crack

<{POST_SNAPBACK}>

thanks Nathan, the seal on the metal cover to the right of the battery was indeed perished. I used windscreen sealant (which never hardens) to replace this, the logic being that if i need to get to my fuel pump in the future it will be simple (but a little messy). at this stage i think it has fixed my fuel smell problem, but time will tell as it was always an intermittent thing.

thanks,

greg

EDIT 1/2/06 - no fuel smell whatsoever since resealing

Edited January 31, 2006 by Greg

[satanic]

Excellent advice.... I was wondering why my fuel filler thing kept moving around when I tried to tighten the cap after re-fills!

Thanks for that!

[chrissso]

I have a fuel smell and counldn't find where it was coming from. Checked the fuel filter up the front and I also checked the fuel tank when I fitted a new fuel pump. All ok.

I got a smell from near the fuel refiller, but the wierd thing is that I got a smell when I wound down the drivers windows when driving. The only thing I could think of is when you wind down the window, it draws air out and then sucks it in else where. Must be sucking air in from the back near the fuel filler.

So anyway, I hunted around the fuel filler section, (after doing a search and found many threads on it) and couldn't find anything.

After a while I noticed the reddy-brownish muck around the top of the fuel filler neck, and noticed that it was brittle.

So then I grabbed the pliers and yanked out the metal neck bit and found this - check pics. Some dodgy bastard has glued it in with I've no idea what, and is almost cetainly the cause of my fuel smell.

Anyway,

From above, it would seem like silkaflex the best thing to go with. Is this stuff a silicon type glue, which will get me a good seal? Is it fuel proof? Will it last? Is it purpose designed? etc?

Thanks

Chriso

[Greg]

Hi Chriso,

Yeah it is a silicon type glue. Sikaflex in what compliancers use to glue the restricter in place. Mine has held up fine so far but it hasn't been very long. Sikaflex is a general autmotive glue and sealer. It's used to hold bodykits on. It also has marine uses,

It looks as if yours was held in place by gasket goo!

Cheers

Greg

[ix9]

I repaired mine with Sikaflex only for it to give way about 2 months later - waste of time.

I'm beginning to LIKE the smell of fuel these days

[Greg]

I repaired mine with Sikaflex only for it to give way about 2 months later - waste of time.

I'm beginning to LIKE the smell of fuel these days

perhaps you should source some of that unsniffable petrol they have introduced to part of the NT

[chrissso]

I repaired mine with Sikaflex only for it to give way about 2 months later - waste of time.

sheet - I just bought some and sealed mine.

What about just a jap bung? I know it's a defect, but maybe it could be a temporary solution.

The cars already been complied anyway - don't need it complied again.

The guy I ought the Sikaflex from said that it's wha the compliancers useually use to do it...

Chriso

[chrissso]

Well, I resealed it and it worked. No more headaches!! And a nice whoosh when I open the cap. I guess I will see how long it lasts.