I have a 2005 Ram 1500 Quad cab with the 5.7L Hemi. It's pretty well known that some people experience a 'tick' with their Hemi. I'm one of those people. I've spoken to multitudes of Dodge/Chrysler techs who all say that's normal and that a warranty repair is not needed, yet I've read on numerous online message boards that some people have actually gotten their local Dodge dealer to admit there is a problem and get their Hemi serviced under warranty, but from what I've read it's complicated and expensive (for the dealer) which is why they don't want to admit it.
Can you shed any light on this? I can't seem to get a straight answer from a dealer, at least not from anyone in my area.
Nothing in writing (TSBs) from Dodge on the subject, but the "Hemi tick" seems to be a common grumble from Hemi owners.
I touched base regarding the engine noise with a longtime friend and Dodge technician on the east coast. According to my guy, and Dodge technical support, it's a hydraulic valve lifter noise which is being considered a normal characteristic of the new-generation hemispherical combustion chamber (Hemi) engine.
The ticking sound is typically heard from a warm engine, idling, while standing to one side of the truck -- more commonly noticed bouncing off the wall at a drive-thru. The technical cause is thought to be the somewhat horizontal positioning of the hydraulic roller tappets (valve lifters) in the engine block. The lifter location projects normal lifter noise out the sides of the engine.
Certain engines do tick slightly more than others. The only attempted fix I could imagine would be replacing the lifters, which may not accomplish anything, and I don't see tearing down the engine being worth the risk. I haven't heard of any claims regarding long-term durability issues involving the noise, so at this point in time, try to ignore it. If the noise is something other than described, have it checked out. In the meantime we'll keep you updated on any relevant news coming out.