What unidentified breather hose is this? Discovery 2 V8 4L

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MAF Diver

Member
Posts
93
I connected my smoke machine to the throttle body and got smoke coming out of this pipe round the back of the engine.

Specs:
- Right hand drive (Australian)
- V8 4L
- 2003 Discovery 2a (facelift)



Here's a photo of the engine bay:

IMG_1703.jpeg
 
Is that your vacuum leak? That's a big pipe!

Does it go into the manifold somewhere after the throttle butterfly?

Perhaps your car used to have EGR, and it's been removed, but the pipe wasn't sealed off? Just guessing. Not many vacuum tubes are that big. I assume your brake booster is still hooked up somewhere.
 
Is that your vacuum leak? That's a big pipe!
One of them... fixing/fixed some others, will update that in the main thread. Don't want to say "fixed!" too soon and then have to take it back :D

Does it go into the manifold somewhere after the throttle butterfly?

Perhaps your car used to have EGR, and it's been removed, but the pipe wasn't sealed off? Just guessing. Not many vacuum tubes are that big. I assume your brake booster is still hooked up somewhere.
I can't really see where it goes, blocked view from all angles.

Yep, brake booster is hooked up and all good.

I don't think Australian models had EGR?
 
Weird - I'd have thought that would be a lot smaller!

Are there still other leaks? They probably should have seen that when the intake was off for the rocker covers...
 
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