2005 PD still sluggish- any advice welcome
Changed the fuel filter per a suggestion, lift pump is working, no codes showing, no check engine light ( cel?). Will start alright but has always run rough when cold, gets better as it warms up ( egr maybe??) but the big thing is it is slow to rev, and will not reach redline or close to it when the pedal is fully depressed, almost sounds like it is running on three cyl. Have not pulled the valve cover lately but will tomorrow to check the cam. Last oil testing showed little if any metals so I am thinking that is not it but will make sure visually tomorrow.
Any advice is welcomed, I will try just about anything as there is no way I am taking it to the stealership and would prefer to fix it at my place if I can figure out how to go about troubleshooting the problem.
Thanks to all,
Johnny