Dude, my civic was doing the same thing, I ended up putting a new motor in it. When it was taken out the number 3 piston was all ****ed up. It must f had bad rings or somthing. You definalty want to check it out. put your finger in the exaust and see how much carbon that comes off. I got my oil changed in like a week it went dry and my oil light came on. hope this helps