How to find a tiny tiny tiny boost leak ?

[DarkSideJohn]

Hey guys,

With the annoying squeal I've been having with my 2.0 TDI , it has been suggested I may have a tiny leak in one of my hoses, you know kinda pin prick sort size. Not enough to be logged as a fault code or light etc but enough to give a high pitched squeal when on boost.

Before replacing hoses at will I was wondering if there was any tried and tested ways of finding leaks. Apparently there are like 7 or 8 hoses it could be, not that I know what I'm actually talking about !

Any advice would be truly fantastic as always !


John

[bacillus]

I think you can get a smoke test done to pin point a boost leak.

[B3n]

Apply soapy water to pipes and look for bubbles etc

[daz_pd]

does it sound kinda like a police siren by any chance?

[DarkSideJohn]

does it sound kinda like a police siren by any chance?

Nope, Its more of a high pitched "dog whistle" kinda noise

[Andy]

i had this on mine when i had the hybrid fitted--it was the pipe on the turbo that needed tighting

[DarkSideJohn]

i had this on mine when i had the hybrid fitted--it was the pipe on the turbo that needed tighting

How would I go about this bud ? Daft question I know but well.....

[Andy]

Am lucky as i work in a garage and have access to a ramp,you need to take the under tray of the car and you can see most of the boost pipes,also checkthe inter cooler pipes as well

[Andy]

Pic of the turbo from under the car

[DarkSideJohn]

So would it be worthwhile taking it to a garage I can trust and basically ask them to check all my pipes and hoses , especially turbo ?

[Andy]

It would be the easier way to do it