Nissan 370Z Forum - View Single Post - high pitched noise (like mosqito sound) from engine

Thread: high pitched noise (like mosqito sound) from engine

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07-08-2014, 03:27 PM

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tiger123

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Quote:

Originally Posted by thompsontechs

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Not to steal your thread, but I have a noise as RPM falls anyone know what it is? Have a listen here:

http://pinetreepistolclub.com/jims/Glow.wmv

Heat-shield?

Sounds like you have HFC's. I have them as well and it sounds the same. The hiss is indigenous to HFC's.

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