Vacuum hoses in a BD

[krot84]

Hey guys.
I'm thinking for checking/replacing my vacuum hoses.
The thing is that i don't exactly know which hoses to check.
Can anyone point out the vacuum hoses under my bonnet ?

Thanks

[Okin DaVanh]

Hey guys.
I'm thinking for checking/replacing my vacuum hoses.
The thing is that i don't exactly know which hoses to check.
Can anyone point out the vacuum hoses under my bonnet ?

Thanks

Neither do we. Is there any reason in particular, why you want to change them? If it's just to do it (as I think it's due to heat rot) as a precaution, just get a few feet/yards of universal hoses. Pull each 1 by 1, and cut to size (1 by 1) and replace. Take your time and try not to pull off more than 1-2 at a time, as it can be a bit confusing under your hood.Can you take a pic (preferably close ups) of your engine?

[krot84]

The reason for me doing so is because i think the engine is not working the way it should, it's difficult for me to explain what exactly is wrong, however an early post of mine (The laggy BD) made me think of the vacuum issue.
Here's my engine bay:
http://www.freeimagehosting.net/t/75318.jpg (http://www.freeimagehosting.net/75318)

[Okin DaVanh]

Definitely need a better intake hose. Are you driving it like that (disconnected at the box) ?? And the "vacuum" lines I can see, are over by your brake master cylinder.

[Garrison]

There is a vacuum chart on the underside of the hood. And I agree, ditch the dryer tubing.

[krot84]

Hhh yes it does look pretty funny.
My previous air intake was as following: http://opposedforces.com/parts/legacy/e ... tration_2/ (http://opposedforces.com/parts/legacy/en_b11/type_11/intake_and_supply_system_turbocharger/air_intake/illustration_2/)
But it sucked too much hot air in that area so i decided for now to let it suck from the side, just above the mud guard.
The job is not over although, however this is not the subject right now.

[Okin DaVanh]

If you can't grab an aftermarket intake, try to get 1 of an older model and mod off of that.

Here's a pic of my 96 2.5 USDM factory intake:
https://sl-i.net/FORUM/images/imported/2011/12/DSCN2405-1.jpg
Try and source 1 used if possible.

And like Garrison said, there's a vacuum diagram that is located under your hood.

[krot84]

There is a vacuum chart on the underside of the hood. And I agree, ditch the dryer tubing.
Where exactly ?
My underside of the hood is covered with the genuine carpet, maybe i should loose it too because it's pretty torn?

[Okin DaVanh]

You could, but tat would cause more vibration.

The diagram should be towards your passenger side on the hood itself. If not, try looking at the FSM (factory service manual) which is a free download off the site. Search "FSM" and locate the proper 1 for your cars model year and motor.

[krot84]

I'll try to look for it.
And about the air duct, it's almost impossible to find it here, and the after market costs a lot!

[Okin DaVanh]

The intake comes factory on 95-96 models.

I'll try to look for it.
If you don't find it, there's always the FSM.

[krot84]

Why the hell they changed it in 1997 ?? To make me miserable ?

[Okin DaVanh]

Why the hell they changed it in 1997 ?? To make me miserable ?
:lol: I believe almost every company out there revises their motors at some point. Also, I believe to meet more stringent emissions regulations. I had a 97 BK 2.2L that I did the same intake mod to. Very easy. Pretty much plug and play.

[Wiscon_Mark]

As far as the vacuum hoses go, I'll echo what Okin said - just buy some hose from an auto store, and cut it to fit. I did that when I went back to stock to replace my really old EGR hoses. I'd say replace everything you can, hose is cheap.

[krot84]

That's exactly what i'm about to do.
But what's the thing with the silicone hoses ?? Are they better? Because they sure not cheaper.

[Okin DaVanh]

They'll take more heat abuse, which I'm sure you'll need in that desert heat.

[krot84]

Got that right with the "desert heat" :lol: :wink:

[Wiscon_Mark]

They aren't functionally better, no. I think mostly they're just aesthetically nicer. But it's not like the standard rubber hoses have a performance issue compared to Silicone. Stick with the rubber ones.

[krot84]

already have.
Just waiting for a new PCV valve to arrive and I'll replace it and its hoses.