turbo noise

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joust1
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Joined: Tue Jul 19, 2016 1:57 pm

turbo noise

Post by joust1 »

Can a turbo squeal at a idle? I have a squeal not sure where it is coming from . Sounds like maybe turbo. ALL ideas welcome.



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bbodie52
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Re: turbo noise

Post by bbodie52 »

:think: In the process of elimination, you might try temporarily removing the fan belt and then running the engine briefly to see of the squealing sound goes away. If it does you can then investigate further to check the fan bearing, idler bearing, and generator to detect the source so that it can be corrected. A mechanic's stethoscope is often helpful at detecting the source of an engine compartment noise.

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joust1
Posts: 23
Joined: Tue Jul 19, 2016 1:57 pm

Re: turbo noise

Post by joust1 »

Thank you i will try that .I have replaced all but fan bearing and turbo. Problem It's not a consent noise.

joelsplace
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Re: turbo noise

Post by joelsplace »

Does it make boost? If yes, then I can't imagine it's the turbo. The fan bearings can make some strange noises and be intermittent.
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joust1
Posts: 23
Joined: Tue Jul 19, 2016 1:57 pm

Re: turbo noise

Post by joust1 »

Yes spools up nice.Yesterday no noise today on way to work noise.

miniman82
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Re: turbo noise

Post by miniman82 »

If it were the turbo you would know. Only thing that can make a noise like that is the compressor making contact with its housing, which would mean the bearing is shot, which usually winds up causing a massive oil leak before you ever hear the noise. So unless you see a smoke screen at your tailpipe or boost stops happening, it’s not the turbo.

When I rebuilt my 180, it squeaked real bad on acceleration. Did some research, turned out the heads needed retorquing- it was a compression leak.
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