Mercedes-Benz Forum - View Single Post - Gl550 loud vacuum leak cannot find it! Help!
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post #1 of Old 01-08-2020, 10:59 PM Thread Starter
Juan Chavarriaga
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Gl550 loud vacuum leak cannot find it! Help!

After getting code p0170 lean bank 1 I checked out my engine and have a loud hissing noise for sure a vacuum leak. I found the pictured hose sitting on top of the transmission near where I suspect the leak is! I thought it was maybe in the injector seats but no! sounds to be directly under injectors possibly bottom of the manifold! It’s driving me insane!
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