VW Passat running lean, P0171... Fault finding and repair.

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Hi

Mistakes were made... Mistakes were corrected...
Bear in mind that, before you watch this video...
😊
Right, VW Passat, came to me with a very rough idling when cold, and randomly throwing an engine light on...
On a scan, P0171, the engine was running lean, could also see that on the live data...
After quite a bit of wrong turns, and head scratching, found the issue!
And probably, nothing that you would imagine it could be the culprit...
Follow me on this video to find out what was the problem and how to resolve it.

Link to my home made smoke tester...
   • I have made my own version of a smoke...  

Helder Puto channel...
   / @helderputo  

Hope you enjoy the video.
Any questions or comments put them below.
Like always, thank you for watching!