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Engine Specific Info and Questions => IDI Engine => Topic started by: hamradio on June 08, 2009, 07:06:41 pm
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So, I know, I know, supposedly compressor surge cannot happen on a diesel. However, my turbo is making a not so awesome noise. It is a chirping-barking-ish kind of noise if I rev it up a couple k to build some boost, and then let off, in neutral. I can also hear it if I'm shifting from 1st to 2nd.
My vanes are shut all the way until 15 psi, when they open.
The video. Boost gauge is 0-25 psi. Hopefully the sound can be picked out over the rattling of some trim.
http://www.youtube.com/watch?v=nUXKkoJ5BLE
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I watched your video and couldn't hear anything abnormal, hopefully someone else will be able to hear it ::).
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the only noise i hear is at idle...
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Ugh, I figured it would be like that. I can hear it through headphones, but I also know what to pick out.
I'll try to get something better tonight. The engine kinda chirps a bit and you can feel it shake through the steering wheel as it goes back down to idle.
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My vanes are shut all the way until 15 psi, when they open.
That is your problem. You need to make a system that moves the vanes progressively with the throttle or adjust the screw setting for minimum vane position.