[LandyQuest]

Hi Folks. 69 88 petrol that I just bought. Had fuel leak from filler hose which I replaced. Put 20 litres of petrol in and it came pouring out underneath...but from where the tank is concealed. Car was restored 20 years ago..but I'm not sure if it was a new tank. Any other sources of the leak?or do I need a new fuel tank? Any info / thoughts appreciated!

 

[Wildefalcon]

Probably need a new tank. They are rust traps.

But first.

Don't trust anything about the restoration.

Remove the seat. Remove the lid on the seat box. Take a good look around the tank.

Especially when the bash plate cradles the inner tank at the front and at the back.

Get underneath and check around the bung.

Check the filler hose behind the seat, check to see if it's still in place, check the breather hose likewise.

Pour more petrol in. And see exactly where it's leaks.

Photos will help.

 

[kermit_rr]

Put 20 litres of petrol in and it came pouring out underneath...

That sounds just right for rusting through at the water trap caused by the double skin manufacture

 

[LandyQuest]

Ok. Thanks for the information! Tank has a healthy amount of rust in it! Think I will replace. I've searched everywhere for tge leak.

 

[Anaconda]

Ours did that when you filled over half way. Found out when driving back when we bought it, brand new mot aswell.

 

[kermit_rr]

Ok. Thanks for the information! Tank has an unhealthy amount of rust in it! Think I will replace. I've searched everywhere for tge leak.

fixed that for you

 

[LandyQuest]

Ours did that when you filled over half way. Found out when driving back when we bought it, brand new mot aswell.

I'll test the new one before I put it in!

 

[LandyQuest]

Hi Folks. 69 88 petrol that I just bought. Had fuel leak from filler hose which I replaced. Put 20 litres of petrol in and it came pouring out underneath...but from where the tank is concealed. Car was restored 20 years ago..but I'm not sure if it was a new tank. Any other sources of the leak?or do I need a new fuel tank? Any info / thoughts appreciated!

Does the new tank go in from underneath?or do I need to remove the seat box / frame from above?

 

[Wildefalcon]

Under neath.

Suggest you invest in a high quality cavity wax and apply to the gap between the tank and the cradle, and apply liberally to all surfaces. I use Bilt hambler dynax S50. Other brands exist. NOT waxoyl.

Buy a new fixing kit as well, cheap and cuts out the faff of recovering the old fixings.

 

[LandyQuest]

Under neath.

Suggest you invest in a high quality cavity wax and apply to the gap between the tank and the cradle, and apply liberally to all surfaces. I use Bilt hambler dynax S50. Other brands exist. NOT waxoyl.

Buy a new fixing kit as well, cheap and cuts out the faff of recovering the old fixings.

Perfect! Thxs!

 

[kermit_rr]

Under neath.

Suggest you invest in a high quality cavity wax and apply to the gap between the tank and the cradle, and apply liberally to all surfaces. I use Bilt hambler dynax S50. Other brands exist. NOT waxoyl.

Buy a new fixing kit as well, cheap and cuts out the faff of recovering the old fixings.

mine is just bolted?

 

[Wildefalcon]

Rubber grommets on one of the bolts, allows for vibration mitigation.

 

[LandyQuest]

Rubber grommets on one of the bolts, allows for vibration mitigation.

Great advice! Thank you.

 

[steve2286w]

Think my replacement

drivers side has the cradle built in for bolting on , but the passenger side military tank had a cradle you could separate if keen to repair

If it pours out when filling it could be over full, with gauge under reading , remove sender or pick up tube and check how full exactly

 

[LandyQuest]

Thanks. But where would it over flow from? I would see it correct?

 

[kermit_rr]

If you overfill a fuel tank then it comes out of the filler

 

[Anaconda]

mine is just bolted?

We just bolted our in aswell.

 

[Anaconda]

Under neath.

Suggest you invest in a high quality cavity wax and apply to the gap between the tank and the cradle, and apply liberally to all surfaces. I use Bilt hambler dynax S50. Other brands exist. NOT waxoyl.

Buy a new fixing kit as well, cheap and cuts out the faff of recovering the old fixings.

OP might want to consider also buying the rubber pipe that connects the filler neck to the tank.

 

[LandyQuest]

If you overfill a fuel tank then it comes out of the filler

Yes. I watched for that. It was not the issue

If you overfill a fuel tank then it comes out of the filler

Yes. There was no overflow from the filler. So I'm going with a hole in the tank

 

[steve2286w]

Mine used to leak from poor seal on sender unit when overfilled