Complaining about the chattering noise coming from engine when l accelerate. It is getting worse, like chattering engine lifters. Sometimes so bad it seems like it affects the engine as there is power loss.

Have been to dealership twice complaining about the chattering noise coming from engine when lite accelerating. They claim they hear nothing. It is getting worse. Sounds like chattering engine lifters on old cars. Sometimes so bad, I have seen people actually turn around and look at me. Very upset and seems like it affects the engine as power loss.