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Old Aug 31, 2022 | 02:49 PM
  #1  
Tannerprebe's Avatar
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Intake Noise

Been dumping some money into my truck lately. New IDM new UVCH etc. And today I noticed a noise I can’t remember hearing previously. It’s faint like a heart beat in the intake but it’s a very faint thump. I don’t know if this is normal or not. I’m attaching the video, maybe someone can tell me if she sounds healthy, or needs some more work. Thanks
Also ignore dirty filter, just got back from a dusty camp trip. Some are saying it sounds normal, I just don’t know if I’m over thinking this lmao. Link https://youtube.com/shorts/jO6NVocEThQ?feature=share
 

Last edited by Tannerprebe; Aug 31, 2022 at 02:52 PM. Reason: Adding link.
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Old Aug 31, 2022 | 05:32 PM
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Thumps in intake are either a bad intake valve or seat or a bent exhaust pushrod or rocker arm. It's combustion pressure getting into the intake or not getting out of the exhaust and escaping when the intake valve opens.
I don't hear anthing abnormal about yours through my speakers.
 
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Old Sep 1, 2022 | 02:25 AM
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Yeah sounds very 7.3 to me.

Could try to slowly rev it up and see if the thump sound is at crank or cam speed.
 
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Old Sep 1, 2022 | 02:15 PM
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Thumping intake or exhaust can also be caused by a cylinder misfiring.

Here's your video visible to us
 
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Old Sep 1, 2022 | 06:47 PM
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I'm hearing a low tone reverb kind of thing, a rhythmic thump is the best description I got.
 
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Old Feb 19, 2023 | 11:31 PM
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Did you ever figure out the source of the sound?
 
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