i just picked up a 2007 ram 1500 with a 5.7 hemi about 2 weeks ago. i noticed a slight rattling from the engineunder light accleration. it almost sounds like detonation. i used 89 octane as the manual specifies and the truck only has 400 miles on it. is that sound normal from these trucks?

Frank

 

My '07 does the same thing. I really started noticing it when I had the windows down. I hear a ticking noise under light acceleration. It actually sounds pretty loud when I hear the sound bounce off houses or buildings. Sometimes going uphill at slow speeds it almost sounds like a diesel. I use 89 octane.

I posted this on another site. Some others have the same issue. I will keep an eye on it and may take it in.