X-trail: Fuel Trim

Kind of dragged my feet updating this.

Plugged in the OBD2 donggle. Ran the software.

What did i find?

Short Term Fuel Trim -> +10 range

Long Term Fuel Trim -> +10 range

That would make total fuel trim -> +20% range 

This would mean I have a lean condition

When I throttle the car to >3000RPM total fuel trim drops under 5%. Per scannerdanner's tutorial information, he would say I have a vacuum leak.

So i need to detect where that vacuum leak is by doing one of the below

- spray bottle

- carb cleaner

- propane

- smoke

Which should I choose?