Hello, I have repaired exceeding 30000 vehicles in my career and I compulsion to question you questions before I am not there in person to accrue facts, data, or to test your vehicle. I may ask you to perform breakdown in my stead. If assay is needed and you would rather not play in testing, I can allow my best advice, Fuel pressure?
I started the car stirring this morning, it starts in the works and runs at 1750 and within a minute or therefore climbs on top of 2500.. It is executive smooth though, just showing off later than it should be. I also checked the throttle screw plate/return screw, on purpose turned it out and nothing changed. put it support to exactly where it was. No vacuum leak sounds and every friends verified. I feel good very nearly them as I've been in there a bunch of times..
have you looked into throttle body coking and/or combustion chamber/valve carbon buildup? are you in the works to date upon every maintenance; spark plugs fuel filter pcv vlave etc? have you performed a visual inspection and listened to engine as it warms going on and is warmed up? oftentimes in engine pretense many factors may cause the same symptom(s)