My car had the timing chain tensioner issue as well as a blown head gasket. My timing chain i believe i caught before the valves got bent. But as for the head gasket. Valves 5-8 in the front are lightly fouled. Im pretty sure there is coolant mixed in the oil. But it wasnt sludge as i had just had the oil changed a day or two before all this crap. So it still has alot of viscousity and still almost looks like oil haha. But i drive an 07 cobalt ls 2.2 lt 5 speed the messed up part is it only has 130k miles. I have the motor almost seperated will be trying to get that done today so i can at least check the valves and look for metal flakes and such. But MY QUESTION IS THIS. What else should i be looking for inside the motor to pretty much decide that its not worth the hassle. I just dont wanna sink some money into it just for something like a low end bearing spin out or something. So things you would decide for your self that the motor is trashed. Please and thank you haha asap. In my head if all i have to do is the timing chain and headgasket then id probably do it. But if this includes low end bearings reringing pistons then i probably wont lol. Just need a little guidance haha.