UrS6 - Wastegate Membrane Query

[macspring]

Is it possible to determine if there is a fault with the wastegate's membrane without taking it apart ?

If the small nuts on the top the waste gate are taken off and the 'lid' taken off, presumably the membrane can then be taken off and examined ?

When the membrane is examined in one's hand, what faults are the 'normal' faults that the membrane suffers from ?

If the membrane is faulty, what will be the nature of the symptoms that might alert a driver to such issues with the membrane ?

Sorry if these questions sound 'simple', but I haven't yet BTDT, and wanted not to make any needless mistakes.

Also and lastly, sorry if this has been covered before.

Thanks.

[andy10v]

Suck the nipple and see if it holds vacuum. Use a Mityvac if you have one, if not just suck and stick you tongue on the end.

SJM has a good page

http://www.sjmautotechnik.com/parts_products/wginst.html

[macspring]

Thanks Andy, understand most of it.

[UrS4boy]

Thanks Andy, understand most of it.

If there is a leak/tear, etc in the membrane, when you apply a vacuum to the nipple on the wastegate cap, it won't hold a vacuum. If it holds, the membrane is probably just fine. Easier than disassembling to visually inspect the membrane.

Hope it isn't ripped because New OE 035145797B membranes are NLA

https://www.ecstuning.com/Search/Sit...797B/ES274128/

[varia]

someone posted on FB not long time ago that 034 will have it soon

https://store.034motorsport.com/upgraded-audi-i5-10v-20v-turbo-replacement-external-wastegate-diaphragm-035145797b.html