PCV valve on BMW Diesel - Page 2

car13 · 4th December 2011, 19:52

Full assemberly, if anyone wants one I have a brand new one boxed, £35 posted.

simdel1 · 4th December 2011, 19:58

As far as I understand it both the 90k figure and the 40k figure are correct.

Housing for original pcv = 90k miles service (not sure when the toilet roll should be changed)

Whole BMW "fit and forget" unit service interval = 40k miles

I changed mine at 95k miles to the BMW one. When faced with having to buy a housing in addition to the filter anyway I decided it would be be better to get the fit and forget one. At my annual mileage I wont need another one for 5 years..assuming I still have the car.

peter1961 · 4th December 2011, 20:25

Quote:

Originally Posted by car13

Full assemberly, if anyone wants one I have a brand new one boxed, £35 posted.

if its the fit and forget filterless one i'll take it please.

kissifer1972 · 5th December 2011, 13:49

IIRC someone came on here to inform us that BMW have stopped fitting the new type filterless unit and started to fit the filtered type again, as there were issues.

I put a new one on mine and chose the filtered type. I change the filter and gaskets (£10) at each service (15k miles) for piece of mind.

Chris

peter1961 · 5th December 2011, 14:27

Quote:

Originally Posted by kissifer1972

IIRC someone came on here to inform us that BMW have stopped fitting the new type filterless unit and started to fit the filtered type again, as there were issues.

Chris

does anybody else have anymore info on this ???.

man of kent · 5th December 2011, 15:27

The PCV filter is to compensate for differences in the crankcase pressure. Its secondary function is to stop 'blow by' gases including burnt oil from contaminating us all with fumes.i.e. reduced emissions.

To stop emissions they fitted a filter. The problem is that with time they get clogged up and the older the engine (more blow by) the quicker they get clogged up.

The reason BMW fitted a filterless one is because the filter can get blocked, so its possible to get turbo failure or even the dipstick blowing out. So they introduced the filterless one which probaly increases the emissions a little. Above it says they are going back to filters. This may be because when they make a change to an engine, they have to have it retested for emissions and it may have failed. Solution, fit a filter again.

My PCV filter at 60k was clogged and I changed it immediately. I will change it again at another 30k and if you have a very high mileage diesel I would check it more frequently. A new filter is a lot cheaper than a bust turbo or oil seasl somewhere else!

With brake fluid, its probably the most ignored service item on a car.

peter1961 · 5th December 2011, 15:45

thanks for that man of kent.
think i'll stick with the filter type and clean it once a year.

nick nick · 5th December 2011, 17:07

Quote:

Originally Posted by Unclefista

Or a fifth

http://www.ebay.co.uk/itm/150622815125

At that price you cant complain

4th December 2011, 19:52	#11
car13 Avid contributor MGZT road MGZR wifes & MGZS race car Join Date: Jun 2009 Location: westhoughton Posts: 212 Thanks: 0 Thanked 0 Times in 0 Posts	Full assemberly, if anyone wants one I have a brand new one boxed, £35 posted. __________________ Vulcan Racing - MG & Honda Race Team www.vulcanracing.co.uk

4th December 2011, 19:58	#12
simdel1 Posted a thing or two Rover 75 Connoisseur SE CDTi, Porsche 944 Lux, MGF Join Date: Nov 2009 Location: Stamford Posts: 1,088 Thanks: 4 Thanked 6 Times in 6 Posts	As far as I understand it both the 90k figure and the 40k figure are correct. Housing for original pcv = 90k miles service (not sure when the toilet roll should be changed) Whole BMW "fit and forget" unit service interval = 40k miles I changed mine at 95k miles to the BMW one. When faced with having to buy a housing in addition to the filter anyway I decided it would be be better to get the fit and forget one. At my annual mileage I wont need another one for 5 years..assuming I still have the car. __________________ Simon The Simdel1 Fleet: http://img593.imageshack.us/img593/447/sigmgf.png

5th December 2011, 13:49	#14
kissifer1972 Posted a thing or two Rover 75 CDTi Conn Tourer & Rover 75 CDT Conn SE Saloon Join Date: May 2010 Location: Queensbury Posts: 1,368 Thanks: 0 Thanked 1 Time in 1 Post	IIRC someone came on here to inform us that BMW have stopped fitting the new type filterless unit and started to fit the filtered type again, as there were issues. I put a new one on mine and chose the filtered type. I change the filter and gaskets (£10) at each service (15k miles) for piece of mind. Chris __________________ Mods so far X-Power Performance Upgrade LED interior lights and sidelights Genuine Rover Xenons - now removed and sold Kenlowe fan Synergy 2 EGR Bypass

5th December 2011, 15:27	#16
man of kent Loves to post 75 tourer auto diesel Join Date: Nov 2010 Location: Nordelph, nr Downham Market Posts: 419 Thanks: 0 Thanked 0 Times in 0 Posts	The PCV filter is to compensate for differences in the crankcase pressure. Its secondary function is to stop 'blow by' gases including burnt oil from contaminating us all with fumes.i.e. reduced emissions. To stop emissions they fitted a filter. The problem is that with time they get clogged up and the older the engine (more blow by) the quicker they get clogged up. The reason BMW fitted a filterless one is because the filter can get blocked, so its possible to get turbo failure or even the dipstick blowing out. So they introduced the filterless one which probaly increases the emissions a little. Above it says they are going back to filters. This may be because when they make a change to an engine, they have to have it retested for emissions and it may have failed. Solution, fit a filter again. My PCV filter at 60k was clogged and I changed it immediately. I will change it again at another 30k and if you have a very high mileage diesel I would check it more frequently. A new filter is a lot cheaper than a bust turbo or oil seasl somewhere else! With brake fluid, its probably the most ignored service item on a car.

5th December 2011, 15:45	#17
peter1961 Gets stuck in 99/V connie cdt moonstone green saloon. 94/L 214 cabriolet dark blue Join Date: Dec 2007 Location: nelson lancashire Posts: 809 Thanks: 3 Thanked 12 Times in 11 Posts	thanks for that man of kent. think i'll stick with the filter type and clean it once a year.