Alright here's the situation. My fuel mileage has hovered around 14-15.5. Typically it is on the lower side. In the mornings I try and let the truck run 15 min before I head to work. My dic fuel economy will go down to 13 ish then slowly back up as I'm driving to work. I picked up a insight cts last week. So I checked balance rates and cylinder 3 was hovering around 5.5-6 in p and 6-8 in d. This is when I get to work. When I start it in the cold morning cylinder 3 is within the gm parameters, but cyl. 2 will read 4-5 but normal after driving to work. Tonight I was watching desired rail pressure and actual rail pressure and they were basically exact while driving. Checked rates when I got home and they cyl 3 was 4 ish. I have no lope or surging. What do you guys think? Truck is not tuned. Cat deleted and lbz mouthpiece. 102,000 miles.
Sorry for the long explanation.
Sorry for the long explanation.
