Recently got my wife a 2010 Civic LX with 118k miles on it. I've noticed that when you cold start it the engine sounds louder than normal for the first mile or so then is quiet for the rest of the day until you start it from cold again.
My best guess is it sounds like an exhaust leak. The sound is coming from the front and not in the rear. I'm thinking that maybe the donut gasket between the cat and the a-pipe is bad but when warmed up seals again. Has anyone ever experienced this? Here is a picture of that connection. A little rusty but nothing looks terrible.
My best guess is it sounds like an exhaust leak. The sound is coming from the front and not in the rear. I'm thinking that maybe the donut gasket between the cat and the a-pipe is bad but when warmed up seals again. Has anyone ever experienced this? Here is a picture of that connection. A little rusty but nothing looks terrible.