I am new to this forum and am seeking advice on a cold startup noise on my 2007 Cobalt LS. Below is the video of my car starting up. I noticed it a couple weeks ago and I do not have any check engine lights or anything on. I have already replaced the tensioner, and it made it so the sound at start shortened and does it really only in the morning now. I took off the valve cover and looked and I did not see anything amiss, as far as I could see down the timing chain anyway. It is giving me a headache and any help will be much appreciated
https://www.youtube.com/watch?v=hRcnyo6PB_w&feature=youtu.be
https://www.youtube.com/watch?v=hRcnyo6PB_w&feature=youtu.be
