Volvo S80 A performance sedan that offers top notch luxury, outstanding handling and so much more.

PCV system cleaning

  #1  
Old 05-06-2009, 08:40 AM
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Default PCV system cleaning

Hi, my s80 is blowing a little blue smoke at idle when warmed up and from research on this forum, I believe I need to clean the PCV system.

On Vadis, it says to remove the intake manifold to clean. Is that necessary? I believe I saw a thread where tech chimed in and said you could get to it without removing it.

Let me know and thanks in advance.
 
  #2  
Old 05-06-2009, 06:19 PM
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Depends on the car some of the years and engine combo you can. I always take it off to make it all easier.
 
  #3  
Old 05-09-2009, 08:17 PM
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When cleaning the S80 PCV system, I read that there are o-rings that seal the filter, or whatever it's called :-), where it goes into the block. Are the o-rings proprietary Volvo or will a regular parts store have some that will work? I have 170K on my 2000 and this is the only oil leak I have. Will it cure it?
 
  #4  
Old 05-09-2009, 09:28 PM
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i havent got access to vadis right now, how hard is it to clean the PCV ? i heard its electronically controlled. which sucks, a simple PCV valve would have been much simpler
 
  #5  
Old 05-10-2009, 08:27 AM
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You need to get the parts from Volvo. Maybe a Volvo/VW parts store might have them.
 
  #6  
Old 05-26-2009, 04:47 PM
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Man what a pain in the unowhat it is to get the oil trap off! That darn bolt on the left side of the trap is behind a bunch of stuff. Have to remove the alternator, A/C compressor, then the frame that holds them to the block. Glad I did though....it was all gunked up. It's surprising because I've had the car since 60K miles (now 172K) and have ran nothing but synthetic. And the smaller o ring was faulty which was causing my only oil leak on the car. I'm using carb cleaner to flush out as much as I can from the oil trap and hoses. Any other suggestions?
 
  #7  
Old 05-26-2009, 07:21 PM
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If you can get a new box. This way you know it will all be good.
Also make sure all the hoses are good and clean.
 
  #8  
Old 05-30-2009, 12:05 PM
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Default in process of removing intake

Ok, so I am in the process of removing the intake manifold. A couple questions for tech et al.

1. There is line that feeds into the fuel rail that I cannot get off. I believe Vadis says I need a proprietary tool. (fuel line quick connect) Where do I get one of these?

2. While taking out the fuel rail, I noticed that the injectors are dirty. What is the best way to clean these? Or is it better to replace them that is if it is cost effective. Let me know, thanks in advance.
 
  #9  
Old 05-30-2009, 12:32 PM
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Most auto parts stores will have the tool.

There is places that clean them.
 
  #10  
Old 05-30-2009, 12:49 PM
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Default fuel line quick connect

I called Advance and they dont have it.

So there are two tubes running to the fuel rail? What are they? One is coated metal with rubber tubing over it and the other is just rubber tubing.
 
  #11  
Old 05-30-2009, 01:18 PM
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There should only be one. The white plastic A/C line disconnect set should work as well.
 
  #12  
Old 05-30-2009, 01:50 PM
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Tech-

Here is a pic of what I am trying to disconnect:

I dont want to damage the fuel rail or the connection so my question is how to disconnect it? It feels like it is a solid metal tubing with rubber over the outside.

Do I disconnect the the metal fitting from the fuel rail?
 
Attached Thumbnails PCV system cleaning-102_2889.jpg  
  #13  
Old 05-30-2009, 01:58 PM
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Also there is about the same size of rubber tubing connecting the to the manifold. Its tough to get off. Should I just cut it and replace with new?
 
  #14  
Old 05-30-2009, 01:59 PM
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The actual disconnect is under the intake. But if you pull the rail out some and remove all the t-25 screws on the metal safety bar and slide the bar out the line should slide out.
 
  #15  
Old 05-30-2009, 02:00 PM
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If it were my car I would try to replace it.
 
  #16  
Old 05-30-2009, 02:05 PM
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Tech, thanks for your help btw.

I have taken off the fuel rail cover, and pulled the injectors out of the holes so all I have left is the rail with the injectors and the fuel line that runs underneath the manifold. I can only lift the fuel rail a couple inches as thats all the slack I have.

There are small hex bolts on the other side of the fuel rail where the injectors go in are those the t-25 bolts you are speaking of?
 
  #17  
Old 05-30-2009, 02:18 PM
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Yes they are.
 
  #18  
Old 05-30-2009, 03:20 PM
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Default Progress....

Ok, got the fuel line disconnected after you wonderful tip about removing back cover of fuel rail (it just popped off, I was looking for the easy button!)

Now, I have to get the bolts out of the manifold. The top ones wear obviously easy but the ones on the far left and right are hard. Do I have to remove the alternator on the left to get it out? And on the right, there are some tubes that are obstructing the other one.

Any tips to get these out then I am home free to clean and service the PCV.
Thanks in advance, you have been a big help.
 
  #19  
Old 05-30-2009, 03:35 PM
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You have to use a long extension for the one on the left. The right one move the pipes some to get the socket on.
 
  #20  
Old 05-30-2009, 05:17 PM
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Ok. I will work on the rest tomorrow after my hockey game. Thanks for the info.
 

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