Turbo makes noise

[GORAX]

Hello everyone,

When I accelerate, there's a slight air noise coming from the turbocharger. It's letting air out somewhere it shouldn't. Where exactly is the air/pressure being released from the turbo?

Citroen C4 Grand Picasso 2015 diesel 2.0

[john79]

is it like a whistling noise?

[GORAX]

Yes, it sounds like a dull whistling sound. Sometimes like bubbling.

[wurlycorner]

Only way to find out is to methodically check the intake system piping all the way from the turbo to the manifold.