Was #1 ok?
Here's a thought........
#1 was running rich (leaking injector) and on avg you were running 14.7:1 (thus the others were lean)
#1 appears fine if it is cracked ,I don't see it. My 4runner has 18,000 miles since new and I mean just about everything is new. Injectors brand new from LC engineering. LC header to tail pipe including cat, muffler , and piping new. Brand new o2 sensor from the toyota dealer not autozone. new TPS from the dealer. toyota cap and rotor, plugs and wires all from the dealer new. radiator, hoses,even the pre bent pipe for the lower radiator hose new from the dealer. Heck I even bought a new oil pick up tube and dip stick from the dealer because I didn't think I could get the original clean enough to my liking. sorry I'm kinda anal. Thats why it is killing me on why this happened. Throttle body new from LC or reman however which way you look at it. New starter, oil pressure sending unit etc etc. Now I'm not sure about the EGR or some of the vacuum solenoids and sensors in the coolant side of the intake manifold. Thats where I am going to start when I get it up and running
