E46 330D boost leak

[MGB3405]

Hi

Anyone know of an easy guide to checking for a boost leak?

tried google not much help

Thanks

[Elliot2000]

If u have a boost leak it should be easy to find- when revving it up u should be able to hear air escaping under pressure from a joint or split pipe. But are u sure it's a leak and just not a lack of boost due to some other issue

[helix402]

You can visually inspect all the boost pipes for leaks. There are three types on the 330d, metal pipes-even these get holes in, vacuum pipes and boost hoses. Old intercoolers can leak too.

[MGB3405]

Thanks; I have lot of induction noise and a bit of black smoke............

[helix402]

Forgot to mention that inlet manifolds can crack on these too, you will see an oily stain around the area normally.