At least I didn't find anything in the search.
Problem - I have a miss in idle. Can't tell if it misses higher up in the rpm band. I've replaced everything. Finally I brought it in to Snap-On diagnostics
Their diagnosis - The injector resistance is too high. Without going into extreme detail, injectors in a sense build up a charge and then open. We'll say dead center of the injector cycle. My injectors (24lb accel's with ~400 miles) are opening up almost at the very end of the cycle, about 1 ms short of injector close. Now if the injector doesn't open in time it causes a miss.

Got all that so far?

Can anyone give their opinions on this?
What is the resistance supposed to be on accel 24lb inj?
stock injectors is 10 my accels are 15. it takes longer for the accels to open putting them farther back in the cycle.

Thoughts?
Is this something I can maybe fix by burning proms? If so, I'll head there.

 

Injectors are nothing more or less than solenoid-operated valves. They don't charge, and they don't "open" (electrically). They're a coil, so when voltage is first applied to them, it takes some time for the current to begin to flow as you will recall from high school physics. But they are designed so that the inductance is low enough so that the current builds up rapidly, so that very short duty cycles can be used. The amount of time between application of power and the valve part opening can be thought of as an additional "injector constant" that you would have to add to the pulse width to get from the "electrical" pulse width to the "hydraulic" pulse width. On the other hand, when power is removed, it takes some time for the magnetism created by the current to decay, and then some more time for the spring inside the injector to accelerate the plunger back to its rest position, so in most cases the delay at opening and the delay at closing roughly cancel each other out.

A miss at idle usually means one cylinder is different from the others. If all 8 of your injectors are the same, then they cannot cause a miss.

If your injectors are known to be identical (just being brand-new is no guarantee of that), then you need to look elsewhere for your miss. You might want to have them flow-tested both statically (#/hr) and dynamically (opening/closing rate). If they are all the same, then look for ignition problems next; then valve train problems; then compression differences.

Typical mechanical causes of "mystery miss" at idle include rolled or otherwise unequal cam lobes, inconsistent rocker ratio (very common with sheet-metal rockers), head gasket leaks, vacuum leaks, a bad intake valve.

 

Why can't anything be easy. Maybe I'll just deal with it till the end of the season and then tear it down.
I'm just trying to avoid throwing parts at it and not having them fix the problem.
Thanks for the help so far.