I bought a Cobalt taking a gamble.
The previous owner thought it had the normal timing chain issue, but not a broken timing chain. He replaced it and it still had a noise issue so he decided to sell it.
I bought it, towed it home jump started it because there was no battery in it so I could hear the noise and start to plan what to do next.
It doesn't sound like a rattle as much as I would think, but a knock, sounds like its up high and someone tapping on the valve cover with a ball end of a hammer.
Any thoughts or guesses on this? I'm not familiar with these motors or their problems and was only trying to get a back and forth to work car out of it.
I'm in Roseville in case any of you guys are willing and familiar enough to stop by listen and diagnose this thing with me.
Thanks a bunch in advance