Squealing noise on engine power off and dropping revs after ERG clean

[ChrisPrado Lurker Find all posts View Profile Close ChrisPrado]

Gday All, I just cleaned out my ERG on the weekend and now have a squealing noise when I turn the engine power off and also when dropping down from revs at about 2500-3000rpm. Sounds like a slipping fan belt but I can't see it slipping and it sounds more like it is coming from mid engine bay. Any ideas appreciated!

https://youtu.be/GZGFHk0v0-A

[ChrisPrado Lurker Find all posts View Profile Close ChrisPrado]

[krypto Avid PP Poster! Find all posts View Profile Close krypto]

Sounds like an air leak. When trouble shooting a problem like this always work back through the changes that were made prior to the problem. In this case gaskets, flanges, hoses etc that were removed

[ChrisPrado Lurker Find all posts View Profile Close ChrisPrado]

Thanks Krypto, I came to the same conclusion and have started working through them.

Cheers, will post an update

[ChrisPrado Lurker Find all posts View Profile Close ChrisPrado]

All working now, must have been a manifold gasket not seating correctly.

[krypto Avid PP Poster! Find all posts View Profile Close krypto]

Great news