UK Yeti 1.2 TSI Manual, Petrol

Would anyone be kind enough by marking the image below, show me where the plastic pipe from the brake servo to the inlet manifold under the throttle body is located?

Trying to investigate an EPC warning light issue for myself but don't have a workshop manual to show me around.

I'd think that you will need to remove the air filter assembly to help you to dig deeper, the throttle body is what the RHS big plastic charge pipe is connected to low down at the front near the radiator.

I've never tried to find out where exactly the brake servo vacuum source is - yet.

Edit:- something makes me think that the long stiff/hard small sized plastic pipe is the one, as it has a pressure sensor - which you can see on your picture "near" the battery.

Edited 13 November, 202513 Nov by rum4mo

19 hours ago, rum4mo said:

I'd think that you will need to remove the air filter assembly to help you to dig deeper, the throttle body is what the RHS big plastic charge pipe is connected to low down at the front near the radiator.

I've never tried to find out where exactly the brake servo vacuum source is - yet.

Edit:- something makes me think that the long stiff/hard small sized plastic pipe is the one, as it has a pressure sensor - which you can see on your picture "near" the battery.

Thank you, today I drove it 4 miles to the garage that services my Yeti, no faster than 15mph, apart from limp mode, ( EPC light ), the engine check light also appeared.

Other then that the car behaved normally, by that I mean no strange noises, no smells except a strong petrol smell, I shall have to see what it is and the cost damage.

Should be able to see it all there, its at the right hand side of the intake manifold.

https://catcar.info/audivw/?lang=en&l=c3RzPT17IjEwIjoiQnJhbmQiLCIyMCI6IlNLT0RBIiwiNDAiOiJZZXRpIEV1cm9wZSIsIjUwIjoiMjAxNSIsIjYwIjoiRW5naW5lIiwiNzAiOiIxMzMwMCJ9fHxzdD09NzB8fGJyYW5kPT1za3x8bWFya2V0PT1DWnx8bWRsPT1ZRVQgIHx8RXBpcz09Nzc5fHxFaW5zYXR6PT0yMDE1fHxNYWluR3JvdXA9PTF8fEJpbGR0YWZlbD09MTMzMDB8fEdyYWZpaz09MDEzMzM1NzQ3

I had that hard plastic pipe split on my Fabia, all strange things happened including losing the cruise control, I bodged it with some electrical insulating tape until I got a new pipe from the dealer, strangely although braking was affected it was not too bad.
Edit, follow it back from the servo, it was split on the other end.

Edited 14 November, 202514 Nov by Urrell

Oh, so it has a strong smell of petrol, is that from under the bonnet or the exhaust? It can smell a bit from the exhaust if the engine has just been cold started, if smelling of petrol from under the bonnet, then that could be leakage from the high pressure fuel rail due to some of the fixing bolts slackening off.

4 hours ago, rum4mo said:

Oh, so it has a strong smell of petrol, is that from under the bonnet or the exhaust? It can smell a bit from the exhaust if the engine has just been cold started, if smelling of petrol from under the bonnet, then that could be leakage from the high pressure fuel rail due to some of the fixing bolts slackening off.

Hi and thanks for the info.

My petrol Yeti is low mileage on a 65 plate, just under 50 thousand miles and is a 1.2 TSi.

About 3 1/2 years ago I had, after a dramatic injector and rail failure, had them replaced, since then the car has been perfect, other than silly things like replacing wheel sensors, that type of thing that's part and parcel of owning a car/Yeti.

I like my Yeti, rarely go faster the 65mph and it chugs away happily.

Even when cold I don't think I have ever smelt petrol. the only time I have done so was the original failure of the rail/ injectors, so you may be onto something as I did get a strong whiff of petrol again this time around.

I know Yeti injectors are known to shake themselves loose or get stripped but would have thought when they replaced the rail and injectors they would have done so with upgraded bolts, I know originally there was a design fault with Yeti fuel rail bolts that was widely reported on this site and others.

I hope it is an issue that can be simply fixed, like tightening, I won't know till next week.

Edited 15 November, 202515 Nov by cado
corrections

The bolts as far as I know, ie from their part numbers, have never been revised probably as they were not the root cause of their failure - it was recorded as being down to incorrect tightening on initial engine assembly that provoked these in service bolt failures.

Everyone working on that failure should know to replace all the fuel rail bolts because if one has failed then the others will already have been stressed, correctly tightening new bolts should, it seems "put that problem to bed" - as well as replacing the injector seals.

1 hour ago, rum4mo said:

The bolts as far as I know, ie from their part numbers, have never been revised probably as they were not the root cause of their failure - it was recorded as being down to incorrect tightening on initial engine assembly that provoked these in service bolt failures.

Everyone working on that failure should know to replace all the fuel rail bolts because if one has failed then the others will already have been stressed, correctly tightening new bolts should, it seems "put that problem to bed" - as well as replacing the injector seals.

That all makes sense, I guess I won't know the prognoses until some time this coming week.