1G Took the intake manifold and saw this

ANGELRAY · Apr 4, 2024

I was helping my friend remove his heads and there was a hissing sound when the car is on I believe these are vacuum lines any advice? Is the same car as mine but with a stock turbo .

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CrackedDSM · Apr 4, 2024

Those are vacuum lines, yes. Related to emissions stuff. I can see one that's open to air/not connected to the other. They connect end-to-end, so if one is plugged up on one end, but nothing on the other, it's just open and possibly sucking vacuum/unmetered air.

Honestly could just delete them all. There's vacuum diagrams all over the forums here if you search.

Bigmike4g63t · Apr 4, 2024

I was about to post on this as well. I'm wondering if they all come off if blocking off the egr and deleting emissions lines....

CrackedDSM · Apr 4, 2024

Bigmike4g63t said:
I was about to post on this as well. I'm wondering if they all come off if blocking off the egr and deleting emissions lines....

Pretty much.

ANGELRAY · Apr 4, 2024

CrackedDSM said:
Those are vacuum lines, yes. Related to emissions stuff. I can see one that's open to air/not connected to the other. They connect end-to-end, so if one is plugged up on one end, but nothing on the other, it's just open and possibly sucking vacuum/unmetered air.

Honestly could just delete them all. There's vacuum diagrams all over the forums here if you search.

So how would we go about deleting the vacuum lines

1990TSIAWDTALON · Apr 5, 2024

Plug them at their source which is usually the intake manifold on a port. They are EGR related and maybe the BCS runs its lines under the intake manifold, like that. As said, most, but not all of us, remove those items or disable them.

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1G Took the intake manifold and saw this

ANGELRAY

CrackedDSM

Bigmike4g63t

CrackedDSM

ANGELRAY

1990TSIAWDTALON

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