| Knocking sound ?? I have a 2004.5 LLY with the PPE, Silverline exhaust, and S&B intake. I have the PPE on power level 3. I pull a 40' 15,000# trailer. The temp gauge is staying at or below 180 not pulling the trailer. I have noticed my engine knocks at around 2000 rpm's. It sounds like it needs a valve adjustment. I have not replaced the fuel filter yet but it is next on the list. Any experience with this? Clogged injectors?? If you punch the throttle, it will still rip! Thanks, Cam |