I have a 2010 ram Truck I purchased a few months ago. I bought it from a gentleman who had health issues and didn't really drive it....kept it in his garage most of the time. It only had 8000 miles on it. It now has 9000 miles on it. The issue is when I start it (cold or hot) it has a random knocking that comes and goes when sitting in idle mode. Sounds like a GM piston slap sound, or a lifter knock.
It is def not the fuel injectors, as I can hear them. It sounds like it's coming from the bottom of the engine....I am getting a stethascope later today to isolate it further. I realize it is under warranty, and had it at the dealer for some tie rod recall issues, and mentioned it as well, and all I got was the usual "it's normal for that engine" and Dodge won't do anything about noises unless it fails.
Having been doing mechanical work for many years, I am familiar with most mechanical components, so yeah, any help would be appreciated as it is embarassing to have a pretty next to new truck sounding like a diesel at idle, and people commenting on how bad it sounds. Any help is appreciated.