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Type 4 Engine Oil Filler Neck Leak
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restocal63
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PostPosted: Mon Jul 17, 2017 6:33 am    Post subject: Type 4 Engine Oil Filler Neck Leak Reply with quote

I have just replaced the gasket for my Type 4 1.8 Engine filler neck, apart from also replacing the pushrod tube seals also put in a new oil dipstick bellow.

Cleaned the filler neck and the engine case mating surfaces properly.

Applied Curil K2 to the gasket surfaces before assembling back.

However once I filled up with fresh oil, the filler neck is leaking again,, as seen in the picture have I messed up something.

Thanks for your help and inputs.
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timvw7476
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PostPosted: Mon Jul 17, 2017 9:07 am    Post subject: Re: Type 4 Engine Oil Filler Neck Leak Reply with quote

Curil K2 is described as "metal to metal" in usage/application.
I use Gasgacinch on that gasket myself.
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aeromech
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PostPosted: Mon Jul 17, 2017 9:12 am    Post subject: Re: Type 4 Engine Oil Filler Neck Leak Reply with quote

I don't see why that Curil K2 wouldn't work for you. Were you installing a new gasket as well? Was everything clean as could be? If so, I'd start looking for a crack somewhere. Maybe use UV dye and a black light to locate the source.
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Tcash Premium Member
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PostPosted: Mon Jul 17, 2017 10:18 am    Post subject: Re: Type 4 Engine Oil Filler Neck Leak Reply with quote

timvw7476 wrote:
Curil K2 is described as "metal to metal" in usage/application.
I use Gasgacinch on that gasket myself.


Can be used "in combination with soft material gaskets"
https://www.elring.de/fileadmin/Dateiablage_DE/2Se..._EN_01.pdf
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Tcash Premium Member
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PostPosted: Mon Jul 17, 2017 10:23 am    Post subject: Re: Type 4 Engine Oil Filler Neck Leak Reply with quote

You are going to need to clean the area good with some brake clean. Get a flashlight and mirror and see where it is leaking from.
Some have had problems with the dipstick tube boot leaking after installation.

Type 4 Dipstick Tube Modification
https://www.thesamba.com/vw/forum/viewtopic.php?p=7796531#7796531

Good luck
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restocal63
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PostPosted: Mon Jul 17, 2017 10:34 am    Post subject: Re: Type 4 Engine Oil Filler Neck Leak Reply with quote

Many thanks for your help and input highly appreciated.

Use Curil K2 even when assembling T1 cases and never had problems or leaks, so there must be something else.

Shall check out and revert back.
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