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Purge control valve vac hose help!

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36K views 32 replies 9 participants last post by  bluebee  
L
#1 ·
Hi all thanks for all you do and all the info on this site. I'm in the process of restoring my 2003 e39 530i. I bought it in 2006 with 33k and now it has 225K. A new house and a layoff has forced me to put maitnence on the back burner for a while. Little by little i'm working on getting her back to tip top shape.

So i just did ccv from bav auto and new valve cover gasket and coils, icv clean etc. I'm getting the po444 so i got the PCV and thats where the problem lies.

While wrestling out the older valve the vac tube that goes to the intake maniford or throttle body came out. I can't for the life of me find where it goes. I've searched the board and I even called bav auto and they got me the picture; it the same pic that I found on realoem.com. Still no luck!

Any help is appreicated; trying to get her back together; so its the end that allows the vapor to be burned by the engine when the valve opens up. I appreciate any help.

Chad
 
C
#10 ·
EVAP system in all cars is very similar.
Hose #3 simply connects to the intake, either upstream or downstream of the throttle plate.
Use a mirror to look for the nipple in the intake throttle housing.
Or run engine and listen for hissing (sucking) noise, you will be able to locate the nipple.
 
#15 ·
We traced out all the vacuum hoses in the M54 engine.

Typing /vacuum hose F3 in the best links nets these, for example:
- How to locate all problematic (between 1/8" & 9/32" ID) 3.5x1.8mm, 3.3x1.8mm & (between 17/64" & 9/32" ID) 7mm ID vacuum tubing (single material), vacuum hoses (multiple material), 3.3mm OD curved vacuum pipes (rigid tubes), 3.5mm & 7mm ID vacuum endcaps (closed end) & 7x3mm manifold o-rings (1) & 7.52X3.52mm and 9.2X2.8mm fuel injection o-rings (1) & gaskets (1) on the M54 engine & where in the USA to get new vacuum tubing & vacuum caps (1) & what SAE sizes to get for all the metric M54 engine vacuum tubes, hoses, pipes, and caps (1) & correcting the F-connector errors in the realoem diagrams (1) & finding the ends of hard-to-locate vacuum tubes (1) & sorely needed clarification on how the M54 CCV vacuum port works on the M52 CCV valve connection to the fuel pressure regulator connection (1) & how to make, borrow, or buy lean-condition misfire test tools to test for vacuum leaks & lean conditions (1) (2)
Image
 
L
#17 ·
bluebee thanks a million...steve not yet. I was preparing for some meetings i have today; i took a minute to go out and feel around but sure enough I couldn't put my hand on it. I'm thinking I need to undo the CCV/oil seperator again. I plan on making it happen tonight! Is it possible to reattach with the manifold in place? or am i better off removing it?

Thanks a million guys! As i'm still gaining some bmw knowledge if anyone has 1978-85 240d/300d mercedes diesel questions/dodge cummins questions/ questions on making biodiesel please hit me up! I know this is a BMW forum but thats what I can bring to the table. As we all know the bmw straight six is one of the best motors built along with that the cummins straight six and the mercedes straight 5 3.0.

I'll keep ya'll posted on my progress!
 
P
#19 ·
That hose is the only one I have never changed on my car--it's hooke to the intake in a place that I can't get my hands on--and there is a clamp that would need to be dislodged before you could remove it--are you sure that the hose that your wanting to remove is leaking air--you could remove the purge valve and then plug that hose on that end and crank the car and then go under the hood and check and see if it's leaking by removing the plug and then reinserting it--you would hear the difference in the sound--the charcol cannister is in the back driverside under the wheel well--there might be an air leak back there causing your problem
 
S
#20 · (Edited)
I helped a person replace the CCV and some vacuum hoses on his 330i with a M54 engine. When he removed the purge valve from the bracket, the hose was dislodged from the back of the intake manifold. It did not have a clamp, but that may just be the case with his car.

I did manage to get the hose back on the vacuum port on the backside of the manifold. It was not easy, but it is possible. IIRC, I positioned the hose as best I could and just managed to get two fingers on it to slip it on the port by reaching under the manifold.
 
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L
#22 ·
Steve530 said:
I helped a person replace the CCV and some vacuum hoses on his 330i with a M54 engine. When he removed the ICV from the bracket, the hose was dislodged from the back of the intake manifold. It did not have a clamp, but that may just be the case with his car.

I did manage to get the hose back on the vacuum port on the backside of the manifold. It was not easy, but it is possible. IIRC, I positioned the hose as best I could and just managed to get two fingers on it to slip it on the port by reaching under the manifold.
Click to expand...
thanks steve I'm currently doing some stuff for work but i plan on venturing out there in an hour or so to tackle it!
 
L
#26 ·
Okay wrestling with this thing. I'm half considering pulling (unbolting) intake manifold to get to it; i have new gaskets for them nd my mileage is 225k. Im gonna try to get to it again.
Ive got throttle body, and icv off. I challenge you all to find a worse job then plugging this thing in. Ug
 
K
#30 · (Edited)
Just did it myself

Hi guys!
Just had exactly the same problem as TS.
I was able to reassemble the hoses without taking intake manifold out. Actually, if you know where to dig - it should be easier (I didn't). I did it on a parking lot at temperatures below freezing so I had fun (so did passers-by).
See attached a couple of pics showing the general view of the engine bay with all intake removed and a closeup of the area where that hose sticks out a 1/4". I didn't have to remove the dipstick and that unit with a bunch of electrical cables - just pulled them out of the way..
It takes some cursing to wiggle CCV out of the way but it is possible, don't give up! It's a pain in the butt to connect/disconnect the hose attached to the top of the CCV so I decided to try my best to leave it connected and eventually succeeded.
Once you insert the purge valve hose back in place I think it's a good idea to tie it with a hose clamp.

PS Forgot to mention - it's 2002 525IT
 

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#32 ·
komato3 said:
Hi guys!
Just had exactly the same problem as TS.
I was able to reassemble the hoses without taking intake manifold out. Actually, if you know where to dig - it should be easier (I didn't). I did it on a parking lot at temperatures below freezing so I had fun (so did passers-by).
See attached a couple of pics showing the general view of the engine bay with all intake removed and a closeup of the area where that hose sticks out a 1/4". I didn't have to remove the dipstick and that unit with a bunch of electrical cables - just pulled them out of the way..
It takes some cursing to wiggle CCV out of the way but it is possible, don't give up! It's a pain in the butt to connect/disconnect the hose attached to the top of the CCV so I decided to try my best to leave it connected and eventually succeeded.
Once you insert the purge valve hose back in place I think it's a good idea to tie it with a hose clamp.

PS Forgot to mention - it's 2002 525IT
Click to expand...
komato3 - many thanks for the photos!

I'm chasing some emissions issues, and the P0441 came up on my '03 530i. I think it may be a vacuum leak but like others have posted, I can't get under the intake manifold to see if it is in fact a vacuum leak and where it is. Now that I've seen these photos I have renewed confidence that I can find it. So you removed the air filter box... What else?

BTW - I shot the following video to illustrate a hissing sound and odd sucking sound I hear at shutdown. Is this what a healthy 530i sounds like?

Thanks,
Chris

http://youtu.be/EAOZJAsc9o4
 
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