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Noise with new catch can


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Installed a Elite catch can last evening and now when the engine is running I can hear a hissing noise like a vaccum leak. I have checked all the fittings. When I squeeze one of the new catch can hoses (either one) the noise is subsided. From other folks experiance, Do these catch can systems have a audible noise? O yea, forgot to mention, the catch can is on a 2015 GMC 6.2L

Thanks

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