Hey there peepz. I know it's hard to help when it's a noise problem, but I'll try my luck anyways.... BTW, it's a D16y4 engine...

Anyways, only started today, and only happened a few times. But when I start the car, as soon as the engine starts, it makes this sound like gears crunching. But the sound comes from the engine itself...

Anyone have any idea as to what it may be? Any help would be appreciated! Thanks in advanced!