PCV System on AWM - Part number confirmation

14655 Views 30 Replies 14 Participants Last post by renton, May 10, 2008

bill1975

Discussion Starter · Feb 17, 2008

I want to do a PCV system replacement on my AWM 1.8T. Im at 69,000 miles and I am told it's a good idea. I also noticed a very very small amount of oil loss or consumption and Im wondering if this is a possible source for that.

After reading several threads I think I know what parts I need, but a few things aren't clear.

It looks like I will have to replace part numbers 2, 3, 5, 6, and 15 from the ETKA diagram below

Assuming those are the parts I need to replace my questions are:

In the above diagram, notice that part 6 (bleeder valve, which I am guessing is the actual "PCV" valve for the 1,8T) is listed as "not a spare part", and instead lists part 6A as the required part. HOWEVER, in this Russian ETKA page courtesy of Pete1 It shows part number 6 as the correct part and 6A is listed as "No genuine parts for this model" The part number is different between 6 and 6A. Which do I need?

Other write ups, such as this one for the AEB mention replacing four check valves with the part number 058-905-291. However the ETKA page for the AWM lists this part number and two others (07C133529A and 06A133528A) as well for other "check valves". Can anyone confirm if these valves are neccesary for this service and which part numbers are correct?

Also, if there are any other parts that need replacing along with this please let me know. I'm hoping to get PCV, Timing belt and tranny fluid change all done in one heroic swoop of the wrench.

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Attofarad

· #2 · Feb 17, 2008

On my 2001 AUG 1.8T, I replaced those, plus the "suction pump." In my case, it was the suction pump that was plugged . I replaced one of the check valves (the 3-legged one), and checked the others for function. I also replaced "13" for a small hole, and at a later date the "L" hose, which was getting soft and sorta collapsing.

The bleeder valve "6" I bought as a replacement made a sort of party horn honking noise. Got another one from a different source, also made a noise when I blew through it, but not quite as bad, so I ended up putting the original back in.

bill1975

Discussion Starter · #3 · Feb 18, 2008

What part is the "suction pump"?

Also, for the bleeder valve, did you get "6" or "6A"?

3dubber

· #4 · Feb 18, 2008

AWM has 6A, no suction pump. I just took off 15 and blasted it with carb cleaner, along with 18 then put it back. That path provides most of the ventilation, all of it under boost. Will attack 6A and 25 when the weather gets warmer. Check for valve cover leakage at the rear. My PCV was so clogged up last year it pissed oil out of the entire valve cover seal. Cleaning 15 was the quick fix. Still have to replace the gasket since it's still weeping.

woodardhsd

· #5 · Feb 18, 2008

3dubber said:
AWM has 6A, no suction pump. I just took off 15 and blasted it with carb cleaner, along with 18 then put it back. That path provides most of the ventilation, all of it under boost. Will attack 6A and 25 when the weather gets warmer. Check for valve cover leakage at the rear. My PCV was so clogged up last year it pissed oil out of the entire valve cover seal. Cleaning 15 was the quick fix. Still have to replace the gasket since it's still weeping.

What year do you have? My AWM (02) sure as hell has a suction pump.

3dubber

· #6 · Feb 18, 2008

I have a '03. I thought only the V6 has one. Where is yours attached?

woodardhsd

· #7 · Feb 18, 2008

Right behind the intake manifold, circled in red.

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modifiedA4

· #8 · Feb 18, 2008

regarding this part:

bill1975 said:
In the above diagram, notice that part 6 (bleeder valve, which I am guessing is the actual "PCV" valve for the 1,8T) is listed as "not a spare part", and instead lists part 6A as the required part. HOWEVER, in this Russian ETKA page courtesy of Pete1 It shows part number 6 as the correct part and 6A is listed as "No genuine parts for this model" The part number is different between 6 and 6A. Which do I need?

there was probably a vin split. if you have an extra (small) metal nipple coming off the valve cover then you use the newer bleeder valve:

if not, use the AEB/ATW one.

-AEB/ATW = no connections off the valve cover
-AWM = one larger connection off the valve cover
-AWM? + = large and small connections off the valve cover

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3dubber

· #9 · Feb 18, 2008

My '03 doesn't have one. It's just like the diagram above. A few variations over the years out there. No matter which one you have it's a PITA to get to.

woodardhsd

· #10 · Feb 18, 2008 (Edited)

3dubber said:
My '03 doesn't have one. It's just like the diagram above. A few variations over the years out there. No matter which one you have it's a PITA to get to.

Here's a question for ya'. Where does hose number 10 lead to on your car?

this link http://www.peteandmichelle.lunarpages.com/b5/PCV-2001-2002.pdf shows my PCV system. Hose number 10 goes to the suction jet pump

3dubber

· #11 · Feb 19, 2008

Hose 10 on my '03 goes between the intake manifold (boost side) and the bleeder valve (6a above) located below the manifold. Are we talking about the same thing? Does your hose 10 go to the suction jet pump?
As far as I know the bleeder valve closes during turbo boost, routing all crankcase gas via Puck valve 15 and hose 18 to the vacuum side of the turbo.

bill1975

Discussion Starter · #12 · Feb 19, 2008

Thanks for all the replies so far. I will have to take a closer look re: 6 vs 6A, but I wont be able to tonight.

Any ideas on the check valves? I will probably also take a look at all the other hoses listed for any breaks or tears. I know the purpose of a PCV system, Im just not entirely sure how the whole system on the 1.8T works.

bill1975

Discussion Starter · #13 · Feb 26, 2008

One more question - does part number 2 (breather tube) have to be replaced, or can it be cleaned out? That one tube is $30!

[email protected][dartmouth]

· #14 · Feb 26, 2008

bill1975 said:
One more question - does part number 2 (breather tube) have to be replaced, or can it be cleaned out? That one tube is $30!

If it's metal, you can clean it.

If it's rubber, check it's condition and if it isn't spongy or deteriorating, just clean it.

woodardhsd

· #15 · Feb 26, 2008

bill1975 said:
One more question - does part number 2 (breather tube) have to be replaced, or can it be cleaned out? That one tube is $30!

If you can get it out without breaking it, go ahead and clean and reuse it. It's definitely a harder plastic than the other hoses. Unfortunately when I removed mine, the end where the valve housing connects broke apart.

Mike

bill1975

Discussion Starter · #16 · Mar 11, 2008

Ok, so Im going to get #5 and #6A. While Im down there I will take a close look at everything else, and clean the puck valve. If anything else needs replacing I will get those parts. I would rather do that then buy a bunch of parts I dont need.

I'm hoping ONE of those hoses is cracked or split as it would be the source of my weeks long noise originating from that area....

Five_fiver

· #17 · Mar 11, 2008

Just curious - are part #'s 6A, 24 (25-26) 27 and 28 under the intake manifold? Whatever is under my intake manifold is wearing a nice coating of oil :thumbdown

Meap

· #18 · Apr 30, 2008

I need help, I have a similar situation. . . I have a '03 1.8t AWM with 57k with a oil leak that is visabily seen all round the valve cover. So I'm looking into the root cause.. . and it seems that maybe my PCV system is clogged after reading more here.

What should I be looking for? What should I be cleaning? I can't find ANY information on the crank-case breathing system in the Bentley manual. I can't even find the damn PCV valve!

Can anybody offer any help? I bought a valve cover gasket but after reading up on that job, maybe I should do the cam adjuster gasket at the same time. I'm not sure if I'm up to that task. . . it seems complicated.

Thanks.

UrbanLegend

· #19 · Apr 30, 2008

I too have a small leak from the back of the engine and have never hadthe PCV valves changed that I know of. But my 02 AWM looks nothing like that upper rear plumbing. The valve cover doesn't even look like that! There's no hockey puck back there, the only one I see is on the big hose coming out of the airbox. What am I seeing or not seeing? I mostly want to locate the puck or whatever would be causing back pressure.

Daisycutter

· #20 · Apr 30, 2008

See the .pdf link above for the 02 PCV diagram.

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