Interesting noise

[defeat54]

I have a 420a turbo That I just bought and had to rebuild and Noticed a sucking-like noise on the left side of the intake manifold. Very small hole and when I ever I plug it up with my finger my car would rev higher. Any clue on what I need to do for that?

 

[greekgodchaos]

Plug it with JB Weld? Sounds like a vac leak. Pics would help.

 

[krh195]

Pics would definitly help, Is it a drilled and tapped hole? Or is it something that broke and started leaking?

You either need to find what hooks up to that hole or get it patched.

If its a ripped open weld or something you could probably have it welded again.

Good luck.

 

[jakk220]

yea its more than likely a vacuum leak. But is it like a nipple or an actual hole that looks like it should not be there? pics would help alot