4.4 V8 split pipe

[themoog]

I took the top engine cover off today for a look (2003 4.4) and found a rubber hose with a rather large hole in it...
It is one of 2 hoses that go across the back of the engine- i think they are crankcase breather pipes- but not sure.
They are really soft, almost melted rubber. Anyone know what they are for? I have had the EML coming on and my C110 tells me it is bank 2 mixture limit exceeded or something like that. Could i have found the fault?

[lezmtaylor]

yes mine had to be changed on my 2002 4.4 earlier this year, cost about £40 for the hoses, AW8 has a write up somewher.
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[themoog]

Ive put some duct tape around it for the time being until i can get some new hoses. What i want to know is how on earth do you get to the offside connections? Does the plastic bulk head below the fan filter come out?

[themoog]

Ah. It does. Found a YouTube link.

[Ubatoid]

While your there, you will want to replace the small hose that goes to the cyclone and give the cyclone itself a good clean out.

[themoog]

Yes I think I will. Drove from Cambridge to Heathrow last night and it certainly runs smoother even with it bodged up.. Managed 26mpg too which beats our old Cayenne- that thing stayed at 18mpg no matter how I drove it.
I also noticed steering wheel shake (only slightly) during heavy braking on the M25 so I may Polybush the thrust arms too.
Just a side note- how do you switch off TP or traffic announcing on the radio? I can shut it up by pressing the info button on the top right corner but its only temporary.

[themoog]

I called Elms BMW Cambourne to get a price for two breather pipies-£56. Hmm. So after extensive research I found two from a 4x4 parts dealer. £17. Thats better...