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Model specific boards => Golf mk4 => Topic started by: Mr_Orange on 04 November 2009, 17:54

Title: AUM Breather system & "Suction jet pump" etc
Post by: Mr_Orange on 04 November 2009, 17:54
In doing the N249 thang at the weekend noticed a nice amount of oil (old & new) around what I've now identified as the "suction jet pump" and associated pipework (part No.s 058133753B, 06A133782D etc).  What is all this pipework under the intake manifold, between the head breather (Y) and oil filter housing and where is it likely leaking off?

Been recently looking at the awesome breather kit, but seeing this problem area can't for the life of me work out how it would fit in/around all this guff. :sad:

Anyone got any bright ideas?   
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: topher on 04 November 2009, 20:20
It's spaghetti junction down there. There are parts of pcv, secondary air pump, brake vac booster lines.. basically everything that relies on a vac/boost feed from the inlet manifold :laugh:

To replace the whole lot is £160.. thats just the parts. Each of those little pipes is around £25 - £30 a piece. Get a torch in there and clean the muck off, you should be able to find a split or break. (just watch you dont damage adjacent pipes when replacing the broken one!)
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: Mr_Orange on 05 November 2009, 17:09
I'm gunna tidy up the N249 bypass this weekend, so I'll give it all a clean down there at the same time see what I can see.

Any pointers to how the two "awesome" breather pipes fit?
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: T_J_G on 05 November 2009, 17:53
still can't get my head around where the Awesome pipe goes either, either we're silly or the pipe's hidden.
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: northeast_gti-t on 05 November 2009, 20:41
have you looked at this tim  :undecided: http://www.awesome-gti.co.uk/shopimages/products/extras/awesomebreathers.jpg (http://www.awesome-gti.co.uk/shopimages/products/extras/awesomebreathers.jpg)
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: T_J_G on 05 November 2009, 20:43
Yup, maybe the later AUMs had different piping. :s when you next have the car apart Matt see if you can work it out.
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: northeast_gti-t on 05 November 2009, 20:52
been trying to have a look on etka for you tim to see where that hose locates etc and trying to follow the diagrams  :laugh: looking at it the take off is from that t-piece from near the oil cooler i'l try and have a look for you tommorrow after work see if i can find the hose tim
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: T_J_G on 05 November 2009, 20:55
Good luck mate! That awesome diagram makes no sense when you follow it on your car.
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: northeast_gti-t on 05 November 2009, 21:05
looks like they have taken that diagram from etka anyway as thats how it appears on there i'l see what i can come up with tim  :laugh:
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: T_J_G on 05 November 2009, 21:06
Cool thanks, when i bypassed my N249 at Mr_Oranges we tried to work it out. But there is not a pipe that comes off the t piece that looks like that.
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: northeast_gti-t on 05 November 2009, 21:09
i'l let you know over the weekend tim see how i get on  :wink:
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: Mr_Orange on 06 November 2009, 15:14
I can follow the yr2000 AUM layout on VAGCAT and identify the same pipework on the car.  The lower hose in the awesome kit just doesn't follow what's on the car or VAGCAT, unless you pull it all out and fit theirs differently.

Will try to diagnose where the vapour is coming from if its dry this weekend!
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: topher on 06 November 2009, 21:22
what are you struggling with here?

(http://www.awesome-gti.co.uk/shopimages/products/extras/awesomebreathers.jpg)

that t-piece actually points upright on the car, its just shown that way in the diagram for clarity
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: T_J_G on 06 November 2009, 21:33
So where does that pipe attach to?
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: Mr_Orange on 08 November 2009, 16:27
Had another look at this today.  Following down from the head breather (Y), wiggly pipe shown in white with the little flat at the top (down to the T piece) is there, but the second awesome pipe in blue is where I got all the suction jet etc? 

As mentioned cleaned that area up today and no sign of fresh oil.  Might be crud from when the dip-stick guide failed?  Will have another look in a week or two.  Looks so much tidier with all the N249 guff stripped out!

TJG, maybe our AUMs are special?   :grin:
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: 2001gti4 on 18 June 2010, 11:28
In doing the N249 thang at the weekend noticed a nice amount of oil (old & new) around what I've now identified as the "suction jet pump" and associated pipework (part No.s 058133753B, 06A133782D etc).  What is all this pipework under the intake manifold, between the head breather (Y) and oil filter housing and where is it likely leaking off?

Been recently looking at the awesome breather kit, but seeing this problem area can't for the life of me work out how it would fit in/around all this guff. :sad:

Anyone got any bright ideas?   

On investigating my boost leak my SJP doesn't look too healthy so I'm thinking of replacing it while I'm in there replacing my PCV valve. I just rang my local dealer and quoted the part number 058133753 and it comes up as for an AGU code automatic rather than the AUM manual I have.
Anyone else encountered this when purchasing one?
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: Waffs1984 on 18 June 2010, 11:52
Have a read of my thread regarding catch tank pipework, apparently there was a difference between early and late AUM engines in the way the PCV and SJP pipework was setup.  :wink:

http://www.golfgtiforum.co.uk/index.php?topic=158515.0
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: 2001gti4 on 18 June 2010, 12:00
Thanks Waffs, I already read that and mine is an early AUM with the inlet manifold => SJP => PCV valve setup. I found the part number for the SJP on a couple of threads here but when I gave that to VW they said it's for an automatic AGU rather than a manual AUM. As I'd have to pay in advance to order it I want to be sure I'm getting the right part  :smiley:
Title: Re: AUM Breather system & "Suction jet pump" etc
Post by: Waffs1984 on 18 June 2010, 12:34
Yeah sorry buddy i relised it was you who has posted, my reply was more aimed at Mr Orange and TJG in repsonse to their AUM's being special - should clear it up for them  :smiley:

Its also a point worth noting when looking at AUM manifolds (e.g. polished) that they may have one port, or two, and depending what mods you've made to your PCV/SJP systems may cause issues  :tongue: