Mud-club

Vehicle & Technical => Discovery => Topic started by: Jimbo on May 04, 2007, 16:51:24

Title: Oil in turbo air intake hose
Post by: Jimbo on May 04, 2007, 16:51:24: Hoovered all the cr4p out of the 'external' side of my airfilter box yesterday, and whilst poking around noticed quite a lot of oil in the air intake hose that goes between the airfilter casing and the turbo - on the turbo side of the MAF sensor.............is this right ?

As the air is heading towards the turbo, the oil can't be coming from the turbo - and the vanes of the turbo look quite clean. This hose does have a smaller hose that leads off to the top of the engine - crankcase breather ? - and what looks like a filter is built into the joint between the small hose and the bigger turbo hose. Is there a filter in there ?, does it need cleaning/replacing ?

Should I have oil in the hose ?

It's the Disco BTW !

Thanks
Title: Oil in turbo air intake hose
Post by: waveydavey on May 05, 2007, 08:10:52: The small hose is the crankcase breather; it vets to the induction system so that there is no oil discharged from it.

I think the filter is just a brillo pad; it could be cleaned in a solvent of some sort if you want to but make sure you get it off. This is the pipe that can destroy engines if a head gasget blows and the engine runs away on the egine oil.
Title: Oil in turbo air intake hose
Post by: fudge on May 05, 2007, 08:37:43: Quote from: "waveydavey"
The small hose is the crankcase breather; it vets to the induction system so that there is no oil discharged from it.

I think the filter is just a brillo pad; it could be cleaned in a solvent of some sort if you want to but make sure you get it off. This is the pipe that can destroy engines if a head gasget blows and the engine runs away on the egine oil.

Saw a Pug 405 do that....... reved its nuts off then BANG if its not your car its quite ammusing seeing people run from the garage when it happens!
Title: Oil in turbo air intake hose
Post by: cardiff_gareth on May 05, 2007, 10:38:56: Quote from: "waveydavey"
This is the pipe that can destroy engines if a head gasget blows and the engine runs away on the egine oil.

Eh - why, what happens and how does it destroy the engine :?:

Not being awkward, just curious 8)
Title: Oil in turbo air intake hose
Post by: thermidorthelobster on May 05, 2007, 10:50:05: Head gasket goes, exhaust gases pressurise the crank case, oil in the crank case vents through the breather, into the air intake; engine starts burning oil from the air intake, which you can't shut off; engine revs go through the roof and bang.
Title: Oil in turbo air intake hose
Post by: cardiff_gareth on May 05, 2007, 11:29:44: That doesn't sound good, before I bought my Disco it had had a new head as the previous owner had cooked it. It was rebuilt and all is ok with it. I was asking as my Disco has an oil leak which I suspect is coming from the breather that is at the top left of the engine, by the rocker cover. Was unsure if I should be worried or not.
If I take the breather off and run the engine what should happen as I want to make sure that what you just described doesn't happen to mine :cry:
Title: Oil in turbo air intake hose
Post by: waveydavey on May 05, 2007, 14:21:18: Basically all that would happen is that the oil goes on the floor; I'm not even sure if that's legal anymore.

It's not always bad; My first Disco did it; if you get it ina high gear and drop the clutch then you can stall it and just need a head gasget.
Title: Oil in turbo air intake hose
Post by: petergalileo on May 05, 2007, 21:32:30: Well I didn't know that ! Does this problem have a name ?
Title: Oil in turbo air intake hose
Post by: waveydavey on May 06, 2007, 05:47:22: Quote from: "petergalileo"
Well I didn't know that ! Does this problem have a name ?

A very bad day