It started a few months ago, I've ignored it until now and looking online I've heard some different possibilities one of which is a rod bearing being worn, which would actually be an inexpensive fix, but want some opinions anyway. For the record that sound you'll hear in the video will happen at a different RPM when the engine is cold, and when it warm. When its cold i have to rev it up a little higher closer to 3k, when its warm just over 2k and it starts that rattle.
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