Rod knock or Main bearing knock?

[yaris2010RS]

Originally Posted by jabranko

Thanks for the reply man. I really hope it's nothing serious I can't afford a new engine, lol.

Does anyone know about the main bearing question though? I havent been able to find the answers about main bearings in my original post and that was why I posted here wondering if anyone knew about them

if its a knock at idle its not a bearing. reason for that is a bearing will not "knock", if a bearing were to make a noice it would basically be a whinning and would continue to get louder as ur rpms increase. it would never "stop" making the noise