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Posted (edited)

Hello there!  I hear a low rumble/rattle when it’s just sitting still with the engine running idle.  Has less than 20 hours of run time.  Have a listen to the attached audio.  I don’t if this is normal.  Slightest amount of gas and rattle goes away.  All in neutral.  Shifting transmission changes nothing

 

 

 

Edited by jmutv
Reloaded with wave file
  • jmutv changed the title to Coleman 550 rattle with engine running idle
  • jmutv changed the title to Coleman 550 rattle/knock with engine running idle
Posted

Were you able to hear the audio file?  I’m getting an error.  I’ll also be getting a mechanics stethoscope from harbor freight.  Thank you for the tips!  I’m not sure when I’ll do that, but hopefully soon.

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