Hello, I am new here, and sorry if I post a Dumb question, but I have a problem with the truck in my signature.

I forgot to add that my truck has had parts fall off and is tuned by the Doctor.

I have a problem with my damn 5-inch Exhaust pipe ratting at an idle.

I went through it last night and tightened all the exhaust pipe band clamps and the downpipe clamp.

The clamp was loose, and I changed out of the rubber exhaust hangers and did all that, and the exhaust was still ratting.

I looked some more and found out it seems like the engine has a vibration at idle.

The engine is not missing, drives fine with lots of power, and is not smoking.

I have only had the truck for a few months and still getting used to it.

The truck has around 174,000 miles on it.

I have only noticed the engine vibrating/ not running smoothly at an idle for a week now.

I am not sure what could be causing it.

Could an injector go bad cause of what I am talking about?

I am not sure where to look.