Air/Exhaust Gas Recirculation

May 30, 2024
10
0
Hi everyone,

I have an Ibiza 6L 2003 - AZQ Engine - 1.2L - 64HP.
Happens that when I bought the car, I took it to a repair shop for some testing's, where the employee "kindly" removed a hose, as he said the hose wasn't there doing anything.....
The hose was loose, and I didn't see where it was attached. So, once my car has some Air/Exhaust issues, I'm trying to fix the "kindness" about what that employed did, removing that hose. And once that the hose is missing, I don't know that any issues can be related to that, once ecu is super sensitive to any kind of leaks.

After plenty of search, I didn't find specifically where that hose is to be attached, although I think ( not sure ) that the hose product code is: 03E 133 778 B
Plus, I've checked some used engines for selling online, and that hose appears on almost every AZQ engine. So, in fact that hose it will be missing.

I let some photos to better explain where the hose is missing.
The missed Hose - which is in the picture, should fits here, and probably on EGR - at least from the schematic I've found.

Captura de ecrã 2025-07llllll1353.jpg





The hose should be 03E 133 778 B which is the nº 25 on the diagram:



25313777773250.jpg



The hose itself it has a larger hole on one side, and a slim hole in another, which lead me to think that suites on EGR - which is actually empty, and the other side fits on engine cover. (but I can be totally wrong, that's why I opened this topic)



connecting-hose 1 .jpg
connecting-hose 0 .jpg





There is anyone able to confirm it on AZQ engine ? I've search all over the internet and I cant confirm and find this info.

It is right to have the connection hose between EGR and throttle body ?

From the infos I got and diagrams, seems that this is only way to connect. Although I'm not sure, so want to confirm it.
I'm trying to fix and properly mount everything.

PS: If anyone has the proper diagram for this car, is super welcome. I couldn't find it.
 
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