Ok, I'm still pondering and racking my brain over my black car's issues. Loading up on fuel, running rich, stumbling and hesitating for a quick second with fast throttle movement.

I'm thinking I should check for a collapsed lifter, as the #2 header primary didn't seem as hot with the sprayed on water test while running as the rest. If I remember, one on the driver side was suspect too.

Can I just pull the valvecovers and crank the engine around to see how high the pushrods are moving, or is there another more in depth (I.E. intake coming off) process???

I have waiting to go on a new EGR, O2's, Oil Pressure sending unit (don't ask), and I should be getting a new adjustable TPS and Alternator soon. Everything else has been checked out. EVERYTHING.

Here's my thinking, let me know if I'm way outta here:

If there's a collapsed lifter, or a rocker adjusted too tight (which there shouldn't be either of), it would not allow the valve to open all the way. Thus, less air coming in, loading up said cylinder on fuel. Not as much combustion, resulting in the loss of power (down 10/10 on the dyno), misfire at fast throttle movement due to excess fuel, and rich condition. Crazy, or possibly on to something. How do I check???

 

Have you checked to see if your injector is stuck wide open?

 

Yup, that's not the case. I'd be having a hard start problem and the problem would be aparrent immediately upon starting. Not the case.

I pulled the rails and did the pressure/leak check too.