TDI 75 Oil Leak

A2Z

Member
Our 53 plate tdi 75 has unfortunately developed quite an oil leak.
I managed to get it on a ramp over the weekend and removed the undertray and gave everywhere a real good cleaning to attempt to find where it was leaking from, which wasn't pleasant as it was in quite a mess.
After cleaning I took it for a quick spin and had a good look around and from what I can see it would appear that the leak is coming from the general area where the oil filler pipe meets the block.
I cannot see any splits in the filler pipe but then I couldn't get a clear view of the end as it's well hidden.
I was just wondering if anyone else has had a similar issue and could possibly shed a little more light?
I don't know if it could be a seal or the connector that connects the pipe to the block and how it actually connects?
Any advice would be very much appreciated.
Ps I will try to add a couple of photos I took.
Thanks 👍
 
Last edited:

Didgesteve

Member
Yes, this has happened to me. I ordered a new tube to be fitted, but the local garage struggled to get the old one out of the block and they gave it back to me a bit bodged, with another pipe stuck round the outside.
They were honest and told me that they couldn't do it though.
So I might have to visit @A2Steve 's mecahnic in Aberdare.
 

johnyfartbox

A2OC Donor
DSC_2839.JPG


In the red circle is the bottom of the oil cooler system, that can be removed to gain access to the crank sensor, if that has been removed in the past it just might need tightening up because oil can leak from there.
Just a guess
 

A2Z

Member
Yes, this has happened to me. I ordered a new tube to be fitted, but the local garage struggled to get the old one out of the block and they gave it back to me a bit bodged, with another pipe stuck round the outside.
They were honest and told me that they couldn't do it though.
So I might have to visit @A2Steve 's mecahnic in Aberdare.
Thanks for replying.
It does look awkward to get to but if I know how it actually attaches then I think it should be doable from above.
I was going to contact Audi later and see about buying the filler tube, if it is available, and maybe they will be able to shed some light on how it connects.
If anyone does know I would appreciate the info.
Hope you get yours sorted soon 👍
 

A2Z

Member
View attachment 61283

In the red circle is the bottom of the oil cooler system, that can be removed to gain access to the crank sensor, if that has been removed in the past it just might need tightening up because oil can leak from there.
Just a guess
Thanks for that.
I did look at the cooler to see if it was that but when I cleaned the oil off I could see it was coming from above and running onto it so I'm pretty sure it's not that, although I was really hoping it was something simple that just needed tightening, wishful thinking.
The car is dead standard and hasn't been messed with and I don't think it's been removed previously.
Thanks again though 👍
 

A2Z

Member
View attachment 61283

In the red circle is the bottom of the oil cooler system, that can be removed to gain access to the crank sensor, if that has been removed in the past it just might need tightening up because oil can leak from there.
Just a guess
Sorry, just realised you meant it could be the crank sensor not the oil cooler itself
 

A2Z

Member
Would anyone have a filler pipe and the connector/seals available as my closest Audi dealer in Tamworth doesn't have a clue? 🤭
Thanks
 

Andy 53i

Member
Check the lower dipstick tube is in the sump - there a bolt on the bracket at the bottom of the tube that fits to the to the sump (near the wiring harness ‘fir tree’ circled in the photo) something doesn’t quite look right on this.
 

johnyfartbox

A2OC Donor
‘fir tree’ circled in the photo) something doesn’t quite look right on this.


Agree Andy, I hadnt noticed that.
 

A2Z

Member
Check the lower dipstick tube is in the sump - there a bolt on the bracket at the bottom of the tube that fits to the to the sump (near the wiring harness ‘fir tree’ circled in the photo) something doesn’t quite look right on this.
Yes I can see what you mean from the photo but I'm not sure if the corrugated outer pipe is just there to protect the inner rubber pipe, which I believe is connected and I thought the leak was coming from higher up above that but I will check again for sure and thanks very much for pointing it out 👍
 
Top