Crankcase breather / oil separator

Birchall

Dick Chown Award 2016
It looks like this one. What do you see in the actual picture it's just a small portion of the amount that got out of the valve.

That is a LOT, I would wonder if someone has actually poured water into the oil (thinking they were topping up the washer!!!)

It is far too much to be just condensation (unless the oil has not been changed for three years.

Steve B
 

madalina

Member
I allready ordered it- should come the next days I hope. It is not so difficult to change it since I did it yesterday when I took out the oil pan for a cleaning. I've change the oil in December right after I bought the car and once more after I saw the mayonnease on the dipstick and on the oil cap. I've changed also the coolant back then- it has the same colour and the same level since then.
 
I can confirm that bad oil separator gives 1.4 16v aua engine ,a horible oil consumation. Mine was 1l off oil on 1500km. After changing the oil separator i top up 500ml on 8000km. The drosel was full of oil and the engine showing error System too lean.
 

madalina

Member
Which hose goes from the breather to the throttle, you mentioned the throttle before?
There is a rubber hose that goes from the breather to the intake manifold just above the throttle body. In the middle of this hose there is a sensor with some kind of resistor - I don't know it's purpose, maybe warming or..... I can make a short DIY when I will change the breather and the hose .
 
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Catnip64

A2OC Donor
There is a rubber hose that goes from the breather to the intake manifold just above the throttle body. In the middle of this hose there is a sensor with some kind of resistor - I don't know it's purpose, maybe warming or..... I can make a short DIY when I will change the breather and the hose .
Yes, it's a heater to prevent the breather hose icing up in cold weather.
If the heater element fails it blows a fuse, the same one that feeds the injectors, so the car stops! It did this on my Lupo, not sure if the A2 is the same though.

With regard to the contents of the breather, I'd say this is normal if the car is only driven short distances and hasn't been cleaned out for a long time.

Steve
 

6stings

A2OC Donor
Interesting. I was asking because there is no rubber hose between the breather and the throttle on 1.6FSI.


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GMH499

Member
Yes, it's a heater to prevent the breather hose icing up in cold weather.
If the heater element fails it blows a fuse, the same one that feeds the injectors, so the car stops! It did this on my Lupo, not sure if the A2 is the same though.

With regard to the contents of the breather, I'd say this is normal if the car is only driven short distances and hasn't been cleaned out for a long time.

Steve
I'm in the process of changing the oil separator and rubber vent hoses on my 1.4 AUA, hoping to cure a minor oil weep.

Parts are genuine AUDI 036 103 464G - Separator
036 103 493AH - 90deg hose, Separator to Heater Pipe
036 103 493AJ - Long double bend hose from Heater Pipe to Air Intake Box

The Heater Pipe - 036 906 391A

When I cleaned the heater pipe ( small amount of black sludge ), I saw an arrow on it.
Is this a direction of flow, or does it indicate where to position the hoses for correct orientation? The hoses do have white marks on one end which correspond with the heater pipe connections on the ETKA diagram.
This diagram doesn't show the heater pipe clearly enough to illustrate the following:-
The heater pipe has one spigot longer than the other. The arrow points towards the longer end, which I think was nearer the separator.
The removed long hose had the wrong part number, indicating someone has been here before.
This might all be trivial, but I'd like to get it right first time.
Do I put a smear of engine oil on the O - rings on the separator when replacing?
The old separator is a genuine part, and seems clear on blowing through; but I thought it a good idea to change it all, as it's listed as a 60,000 mile service item.
Advice would be appreciated. Thank you.
 
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