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712 Posts
Since my accident, when I rev the engine, it seems fine up to about 5000rpm, when I hit 5k, until about 5500 or so, it vibrates and makes a buzzing/humming/whirring noise, after 5500 or so, it goes away. Could this be something like a main bearing? I dont know if it is related to my accident or not, but it does it now and it worries me.