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Mazda 6 2.2 MZR-CD engine knocking noise

2K views 1 reply 2 participants last post by  Byakuya 
#1 · (Edited)
Hello everyone,
I am the owner of a 2010 Mazda 6 2nd Generation 2.2 MZR CD 125.
I have a problem with the engine. there is a fairly loud knocking noise (see video) that has appeared. I have no power loss. This knocking noise follows the rhythm of the motor.

Video: Video Mazda 6 2.2 Knocking Noise + Acceleration

Here is a list of what has been done to the vehicle :
  • timing chain -> change
  • accessory and oil pump pulley ->
  • Alternator check (start without and always the noise)
  • Injector controlled by Mazda
  • Valves -> OK
  • Connecting rod and bearing OK

Have you an idea of what the problem could be ? Maybe someone had the same problem ?

Thanks a lot for your help !
 
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#2 ·
Welcome to the forum!

Sorry, for some reason the forum made me approve your post before others could see it. Also, I know very little about the 2nd gen. Free bump so hopefully someone who knows best can see it.
 
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