Volvo S40 1.8 2006 PCV Valve & Hose Replacement

brunocar5 · Jan 25th, 2019, 13:12

Hi all, wanted to post to possibly help anyone out there that is thinking about changing out their PCV Valve, or performing the delete by on the swirly flaps on the inlet manifold.

I basically failed the emissions test, quite badly on my MOT and decided to try and reduce the emissions. I done basic oil/filter, air filter and spark plug change, which actually made a big difference after a good thrape down the highway.

I did some further research and found that I was blowing quite badly out the oil filler cap, so decided to try replacing the PCV Valve.

I posted on here in another thread on the location of the valve and was pointed to the following video:

https://youtu.be/vBxm5QjD0PY

This is basically a Mazda 'L' engine and used by several companies, with their own little quirks.

The problem with replacing the PCV Valve is that it is sat right behind the inlet manifold (the black lump at the front of the engine).

The video above looked quite straight forward, but I've never tried anything like this on a car, and the whole process took me 2 days to complete, granted the weather on day 1 was shocking and I had to do this outside on my drive, but make sure you allow time.

I will post some pics, which will show the oil seperator where the valve sits on top, and various other photos which might help. The bolts holding the manifold onto the engine are in a different place, with the worst one located in the center down a small hole, see pic, this is really tricky to get to, if you look down the side of the manifold with a torch you will see it.

There is less room to move the manifold than the ford, you just have to use brut force but be careful with the cabling loom.

I took the opportunity to remove the swirly flaps too, as I dont plan on taking off the manifold ever again, as they have been known to cause issues when they break off and shred the engine, video here:

https://www.youtube.com/watch?v=amRXA22ofds

If you attempt this, then I would be willing to answer any questions to help.

The upside, it passed the emissions test after doing this.

Good luck.

brunocar5 · Jan 25th, 2019, 13:57

I have uploaded the photos here:

https://www.flickr.com/gp/169548668@N08/630h06

You will notice the bolt positions on the inlet menifold, and the awkward one highlighted in blue.

Branan walls · Apr 7th, 2019, 14:44

Hi I was wandering where I could find the pcv hose I have searched everywhere and could not find it. I know that they use the same parts as the Mondeo and other cars, but them hoses look to small for my valve.

Jaston10078 · Nov 24th, 2021, 20:58

Hi brunocar5, how has your car been since removing the flaps? Any issues with emmisions on the MOT? Doing my pcv valve soon

Jan 25th, 2019, 13:12	#1
brunocar5 New Member Last Online: Jun 12th, 2019 21:46 Join Date: Apr 2017 Location: Redditch	Volvo S40 1.8 2006 PCV Valve & Hose Replacement Hi all, wanted to post to possibly help anyone out there that is thinking about changing out their PCV Valve, or performing the delete by on the swirly flaps on the inlet manifold. I basically failed the emissions test, quite badly on my MOT and decided to try and reduce the emissions. I done basic oil/filter, air filter and spark plug change, which actually made a big difference after a good thrape down the highway. I did some further research and found that I was blowing quite badly out the oil filler cap, so decided to try replacing the PCV Valve. I posted on here in another thread on the location of the valve and was pointed to the following video: https://youtu.be/vBxm5QjD0PY This is basically a Mazda 'L' engine and used by several companies, with their own little quirks. The problem with replacing the PCV Valve is that it is sat right behind the inlet manifold (the black lump at the front of the engine). The video above looked quite straight forward, but I've never tried anything like this on a car, and the whole process took me 2 days to complete, granted the weather on day 1 was shocking and I had to do this outside on my drive, but make sure you allow time. I will post some pics, which will show the oil seperator where the valve sits on top, and various other photos which might help. The bolts holding the manifold onto the engine are in a different place, with the worst one located in the center down a small hole, see pic, this is really tricky to get to, if you look down the side of the manifold with a torch you will see it. There is less room to move the manifold than the ford, you just have to use brut force but be careful with the cabling loom. I took the opportunity to remove the swirly flaps too, as I dont plan on taking off the manifold ever again, as they have been known to cause issues when they break off and shred the engine, video here: https://www.youtube.com/watch?v=amRXA22ofds If you attempt this, then I would be willing to answer any questions to help. The upside, it passed the emissions test after doing this. Good luck. Last edited by brunocar5; Jan 25th, 2019 at 14:00.

Apr 7th, 2019, 14:44	#3
Branan walls New Member Last Online: Apr 7th, 2019 14:44 Join Date: Jan 2019 Location: Belfast	Pcv valve hose replacement on a 1.8 Volvo S40 2005 Hi I was wandering where I could find the pcv hose I have searched everywhere and could not find it. I know that they use the same parts as the Mondeo and other cars, but them hoses look to small for my valve.

Jan 25th, 2019, 13:57	#2
brunocar5 New Member Last Online: Jun 12th, 2019 21:46 Join Date: Apr 2017 Location: Redditch	I have uploaded the photos here: https://www.flickr.com/gp/169548668@N08/630h06 You will notice the bolt positions on the inlet menifold, and the awkward one highlighted in blue.

Nov 24th, 2021, 20:58	#4
Jaston10078 New Member Last Online: Oct 27th, 2023 16:12 Join Date: Sep 2021 Location: London	Hi brunocar5, how has your car been since removing the flaps? Any issues with emmisions on the MOT? Doing my pcv valve soon

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