Drilled a hole in the fuel tank

5 months 2 weeks ago #193566 by cbbtoan
Hi folks
First time poster, I hope I’m doing this right

I’m one of those idiots who drilled a hole in the fuel tank while trying to fit a sub in the wife’s MGF :oops:

I’m not sure what type of plastic the tank is made from, so I’m not sure the best way to repair the hole.

Anyone any experience?

Many thanks

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5 months 2 weeks ago #193567 by Forrester
Epoxy putty will do the job [Plastic Padding], from any diy store or Halfords.

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5 months 2 weeks ago #193572 by talkingcars
Opps....

Hi and welcome to the forum.

To be honest I would probably swap the tank as I'd be worried that if a repair failed I would have fuel leaking around my ankles as I drive.

I managed to avoid drilling the tank by slipping some MDF behind the carpet and making sure the screws didn't come out the back of this.

Hope you get the problem sorted quickly.


Home to black MGZS180, yellow MGZS180, blue MGZR160, green MGF VVC and red MG Maestro T16.

MG - the friendly marque.

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5 months 1 week ago #193574 by Cobber
Yeah I'd also be inclined to replace the tank, for the same reasons, it can be hard to get things to stick to plastics properly and it would be worse with petrol attacking it.

"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"

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5 months 1 week ago #193575 by Steve
Repair is not an option in my opinion I would definately replace for safety!

Sent from my SM-G950F using Tapatalk

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5 months 1 week ago #193578 by cbbtoan
Thanks Forrester

I’ve heard of folk using epoxy putty for fuel tanks. Apparently it can’t be used on polythene or polypropylene, so I wanted to check the tank wasn’t made of those.

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5 months 1 week ago #193579 by cbbtoan
On Closer inspection, the tank reads >HD-PE< meaning it is made of High-Density Polyethylene. I phoned Bostik who make an epoxy putty and they say they don't have anything to work with that type of plastic.

The search continues - I might have to look at plastic welding :-?

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5 months 1 week ago #193580 by mowog73
Not many glues work at all on HDPE, plastic welding is probably the only solution.

I agree with others though, I'd explore replacing the tank.

Mark
95 MGF

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5 months 1 week ago #193581 by cbbtoan
Thanks Mark
I've been doing some research and have sourced some HDPE. I'm going to have a go plugging the gap and welding it together.
Replacing the tank looks like a long expensive job. I hope to avoid it if I can.

all for a little extra bass!

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5 months 1 week ago #193583 by G0RSQ
If it is your wifes car then OK to try an unconventional repair (maybe put some chewing gum over it instead). :dry:

However make sure her life insurance is fully paid up first. :broon:

Me...no hesitation at all, replace the tank!


Because you know I'm all about that bass,
'Bout that bass, no treble
I'm all 'bout that bass, 'bout that bass, no treble
I'm all 'bout that bass, 'bout that bass, no treble
I'm all 'bout that bass, 'bout that bass

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5 months 1 week ago - 5 months 1 week ago #193585 by Cobber

cbbtoan wrote: Thanks Mark
I've been doing some research and have sourced some HDPE. I'm going to have a go plugging the gap and welding it together.
Replacing the tank looks like a long expensive job. I hope to avoid it if I can.

all for a little extra bass!


Why would replacing the tank be so much more difficult and expensive?
Given that you method of repair involves using heat on a vessel that has contained a highly volatile fuel, surely you would remove it first and use steam to remove all traces of fuel, remember it's the fuel vapour that goes bang not the liquid!
Now having gone to all the trouble of removing the tank, you may as well replace it, I doubt that sourcing a new one should be too difficult or expensive, given the number of rusted out cars being dismantled for parts.
Other than the safety risk, by attempting a repair, you risk having to remove it all again if the repair doesn't work! :doh:


Stop being a tightarse, and chuck the old tank to the shithouse.It'll cost less in the long run. :spank:
Do it right and only do it once. doing thing by halves is guaranteed that you'll be doing it at least twice.
Take it s a learning experience, Don't go boring holes in things until you know whats on the other side, this time it was the fuel tank next time it could be the wiring loom. :woowoo:

"Keep calm, relax, focus on the problem & PULL THE BLOODY TRIGGER"

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5 months 1 week ago - 5 months 1 week ago #193587 by Forrester
Epoxy putty is ideal for repairing plastic items & will be stronger than the original material.
Best to try 1st rather than a new tank.

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