Low oil pressure

[Barn]

Sad day today I am calling it a day.
I cannot go on with my RS2 so I am going to sell.
Thanks to everyone for your help.

[Barn]

Near Cambridge.

[Az786]

Where about are you located pal?

[Barn]

Thanks for the diagram. I don't think the oil got hot enough in the engine and I agree that I do not think this is going to be causing the problem.
I have ordered the oil pump drive lever today the part that is heated on to the crank and drives the pump, when I checked it felt very solid but it may be coming loose when the temperature rises. I am really clutching at straws now.
The other thing I noticed is that when the pressure drops as it gets hotter, if you increase the revs the pressure still does not increase so the drive lever may be slipping on the crank !

[twoqu]

Not much help, but perhaps this at least allows us to understand the oil system a little better. You wil have to ignore the extra oil filter which Audi used on earlier models for the turbo. It was the only diagram I could find. You should be able to see how the piston covers/uncovers the port. Still struggling to see how this would cause your symptoms even if it malfunctioned unless it is stuck shut and oil temperature is high enough to effect things. Although that should have been observable.

[Barn]

I used my snap on one,it's always been fine.

[Bowie69]

Is the oil pressure gauge you used a known-accurate one?

[Bowie69]

This one.... http://www.s2forum.com/forum/showthr...t=69194&page=3

[Barn]

I guess the oil wasn't hot enough. I will keep searching for an answer, the car runs so smooth and quite, also the engine internals are really clean, hopefully it won't need a major rebuild my wallet can't stretch to that.

[twoqu]

The oil stat is only concerned with oil temp! I have seen a temp of 100C mentioned by one member who tested it with boiling water. So thats oil temp of 100C. So perhaps it just that it hasn't opened.
Annoyingly there is a stripped down oil stat post/thread somewhere on here.

[Barn]

I had a water temp of 90 when I ran the car today so I would have thought both oil pipes should have been hot.

[twoqu]

http://www.s2forum.com/forum/showpost.php?p=775501&postcount=5

[twoqu]

I thought it was a bit strange that they weren't both hot, perhaps I could loop the cooler out of the system ?
Thanks for the input.

Although if its the return side that needs to open for the flow to start that would explain that! Need to look at how exactly it works. Having said that if the temperature is enough you would expect both pipes to be hot.
Just trying to link the hot pressure drop with something. Would have thought the oil pump drive would struggle with cold oil rather than hot but who knows!

[Barn]

I thought it was a bit strange that they weren't both hot, perhaps I could loop the cooler out of the system ?
Thanks for the input.

[twoqu]

Without any airflow you would expect that the return would be almost as hot as the supply. Not sure if thats implying some sort of blockage in either the cooler itself or the return pipe. The question is whether that would explain the symptoms. Obviously once the stat opens it does divert a certain amount of oil so perhaps if that is not being returned the level drops.
Just late night ramblings. Wish I had the definitive answer for you.