Humming noise

ONLY for ADVANCED technical discussion about the 240sx!
Zoom45
Posts: 53
Joined: Mon Jul 21, 2008 2:55 am

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My 1992 240sx has a humming noise coming from somewhere behind the head if I have the ignition on and ease down on the gas. The noise eases up and quits when it gets to WOT. What makes this noise? It's so tight behind the head I can't get my hand in there to feel for something vibrating.Zoom45


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