Hello Experts,

I need some help regarding the reference images. I was driving a 2002 1.2L Skoda Fabia when I noticed the oil light blinking. The oil was changed two months ago. Upon inspection, I found a disconnected black vent pipe but couldn't locate where it should be connected. I started the engine and noticed that air is being sucked in, which suggests it might be an air inlet.

I’ve attached some pictures for reference.

Manual Gear, EU

Added a Youtube Short - 

Saby

I can't see where the pipe is connecting, at the end with blue tape. 

Take the engine cover off for a better view of everything. 

 

Is the oil light yellow (low level) or red (low pressure)?

If it is red try unplugging the 1-wire connector for the pressure switch (right in front of you with engine cover off) to see if it has leaked oil inside.

 

 

I see red sign of oil , which pops up and goes off. 

 

Attached the v shape vent pipe - one goes to pressure switch which is marked in one of the upload and secured and no leaking, the blue tape connection was worn off and its just taking air inside while you switch on the engine and no where to see get connected. 

 

Posting the view of engine (ignore the engine sound as its from the next car. 

 

The connector for the oil pressure switch (green plastic body, last photo) looks very oily on the outside of it? I think that is leaking and needs replacing.

That should solve the oil pressure light fault, I think.

 

The vent pipes should be as follows, I believe, and there should be nothing on the v-shape part where the blue tape pipe is.

 

Green square to green square (air intake for rocker cover)

Red square to red square (pressure equalising feed to EGR valve)

 

Thank you, Peter. I’ll proceed with replacing the oil pressure switch, as you suggested. I’ve checked and confirmed that all the connections you described are properly in place.

However, my concern is with the V-shaped vent connector. One side of it, where the pipe with the blue tape is located, appears to be sucking in air, but I can’t find where it should connect. The red square to red square (pressure equalizing feed to the EGR valve) is properly connected, but the other side of this V-connector has a 15 cm pipe that seems to be drawing air with no connection point.

From my understanding, all pipes should be connected in a closed loop, and there shouldn’t be any fresh air intake through these pipes. Could you confirm if this is correct or if I’m missing something?

Just block off that other part of the v shape fitting. 

Edit, or just try moving the EGR connection onto that one and see if the other one is sucking or not.

Edited 5 January, 20251 yr by Breezy_Pete

Thanks Peter will try doing the same if the air is sucking in or not , what should be ideal situation ?

My partner will be home soon with her car, so I can remind myself if it has that v shape fitting or not.

Ideally both pipes (from EGR and from valve cover) should be connected to sources of clean, filtered air from the downstream side of the air filter.

Any unused connections at the air filter/ engine cover should be blanked off to avoid unfiltered air entering instead. 

 

Interesting!

The v-fitting is supposed to link these two parts of the engine cover with a pipe, broken at both ends here, and missing.

I didn't know that had happened on our Fabia. 😁

 

I see , it’s strange and is ther any issue or warning signal ? As far as I understand from this picture, one connected to EGR and other one is closed ?

No, the v-fitting is just a connection, both parts open, to 'forward' the EGR connection onwards to the part of the airbox where the filtered air is.

Here's a photo of the two remaining parts of the linking hose. If you zoom in, the one on the left looks a bit like a blank,  with partly flat end, but I guess the hose attached to the broken edge.

 

A correctly connected one (ebay listing photo)

 

 

Any piece of hose that fits (and doesn't melt with engine heat) should be OK. It's not listed as a separate part.

Edited 5 January, 20251 yr by Breezy_Pete

The absence of it will not cause any problems or warning lights.

Thank you Peter , you are amazing 

 

Thank you for making me aware of a missing part on our car.