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Engine "knocking" noise- help?

604 Views 2 Replies 3 Participants Last post by  Forcedinduction
Hi everybody,
So I was driving my 1984 Mercedes 300TD wagon (~300k miles) and after about an hour on the road I started hearing this knocking noise coming from the engine. I thought it might be the injectors, so I used 2 cans of diesel purge and it still hasn't gone away. I've included a link to a Youtube video so you can hear it yourself. Any thoughts or tips on how to troubleshoot this? Thanks for your help.

1 - 1 of 3 Posts
Could be your air cleaner mount is broken. Remove it and see if that is where the noise is coming from.
1 - 1 of 3 Posts
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