1998 528 se noise

Nashby wrote: ok yours is different to mine

Bummer!  I thought your description sounded different to mineI had it in my head that the 523 and 528 engines were much the same or do you have a M52TU engine?  Mine is just the M52 i.e. single vanos and manual throttle instead of dual vanos and electronic throttle.  Or am I talking rubbish here

Thanks anyway. 

Andrew

So what does a Cyclone Valve do then and what's the effect of having a dicky one (other than the fog horn noise) like me ?

Also it's worth bearing in mind that on mine the pressure pipe that goes to the fuel pressure regulater comes from the cyclone valve

i tell you what, ring my dealer on 08456047619 they supplyed the valve

Ian

I had my BMindy guys change my cyclone valve on my 1999 520. They didnt have to strip the manifold.....attacked it from above the engine bay, removing the airbox and oil dipstick tube plus a couple of other pipes. All in took them about an hour.

Thanks for that. I may ask the main dealer and get a cost estimate from them. The description sounds straight forward, but when I looked and saw what was in the way (looking on from the air filter side), plus the fact that I could only just see the very bottom of it showing (considering it's about 5" high), it seemed a massive job. My mechanic had the same view. Can I presume this part is only held in place by the pipes that are attached to it ? i.e. if the pipes are removed from their other ends, then the valve can be extracted from underneath the inlet manifold ?

Apologies for labouring the point, but I just want to be clear before I set someone off on what seemed an impossible task !

Thanks.

I forgot that I had some piccies on my phone.

This is the view with the air box off. The torch shows the direction of view of the next photo. You can see the red top of the dip-stick.

This next photo shows the view under the manifold. The very bottom of the valve is dead centre, behind all this gubbins....(can't see it here).

This is the final close-up. If I knew how to superimpose, I could show an arrow, but safe to say, it's bearly visible behind the foreground pipes etc. As I said earlier, the perplexing thing was that this was the very bottom of the thing and it ain't a small part !