Forum » Off Topic Discussion » intermittent buzzing sound right at the touch of the throttle?

intermittent buzzing sound right at the touch of the throttle?

Off Topic Discussion

If it's not really about tuning or wiring. Then it belongs in here.

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Hey guys - I know this is a tuning forum and maybe this posted on the wrong html but it's got my tuning stopped.

essentially the absolute second I touch the throttle I get a buzzing sound. With the help of a buddy it really sounds like (through a mechanics stethoscope) that it's coming from the fuel rail under the plenum. I don't think its the fuel pump/fuel basket as I've dis-assembled and reassembled. The pump is sitting snug and no loose parts. Nor do I think it's my injectors as I've swapped out my DW600cc for my OEM 335cc, the fuel rail is tight and nothing is rubbing/vibrating against it. My fuel rail does not have a fuel damper but this problem wasnt around earlier in my previous setups. '03 350z/VQDE, CJ motorsports return fuel system, DW600cc, greddy twins, built block, haltech platinum plug & play harness.

Here are a few videos of my dash with the sound...

any help would be appreciated and thank you for your time -


Hey James,

I'm not sure that I can specifically notice the sound you are mentioning. When I saw the title of this thread I assumed you would have been meaning the buzzing of the DBW throttle but now I realise this wasn't the case. It might be worth unplugging the VCT solenoids just for a test and make sure the noise isn't related to the cams being moved.