Is there likely to be a problem if there is oil in my air breather tube 2001 porsche cerrera

i would expect it is a breather connection to supply oily air to the air intake , will most likely have a wire gauze filter inside , this can be cleaned with a drop of petrol

try this u tube link
911 Porsche Carrera DME Relay and ECU DIY

The "tube" from your oil fill to your breather should heve a n either metal or plastic piece in it . if you remove it and shahe it it should rattle , that is the one way check ball (no rattle = no good) this part is called the PVC (Positive Crankcase Ventelation) The lower end of your motoe needs to be vented and this is how it's done. Now that I've explained a little how it works ......the bad news , if you'r getting a lot of oil out of this into your air filter, you most likely have bad piston rings : ( If on a budget and cannot afford a new motor or get that one rebuilt you can unhook it from the air filter box and make a "catch can" and run the "pipe" which I'm assuming is a hose into it (so it is not dripping oil on your motor . It will buy you some time until you can get it fixed properly .

Could be any one of a number of problems but first i would check the engine breather which will be a tube from the rocker cover to the air intake as in this tube could be a gauze wire filter and this might need cleaning but iam not familar with this engine so i honestly couldnt tell you where to look for the breather or even what it looks like on this engine which iam assuming is a indian built engine .

You could also try replacing or cleaning the filter element inside the airbox. It may just be saturated with oil after all these years.

hello there
Make shure you fuel filler caps is on corrrectly.Also water+oil filler caps have to be tight.
Then you could try mass air flow meter .
After try to have someone replace oil separator unit for you with the breather hose.

proporsche

This is almost always the pressure sending unit for the oil pressure gauge. It is located at back topside of the motor, slightly to the right of the center of the engine. It is buried beneath the intake manifold.

this a turbo problem, you must to repair turbo

On top of the valve cover there is a fresh air breather unit. Make sure the breather unit is not plugged.
Also the fixed orifice PCV should be clear. Find a tool that will go through the orifice and make sure it is clean.
Remove the vacuum hose and check it for cracks or internal damage. With the engine running, make sure you have vacuum through the hose.
Let me know when your finished cleaning the crankcase breather system.
Regards,