Piston soak cyl 1. I pull the plug. Pour 2 ounces of kerosene, or any solvent/carb cleaner. Leave it sit for a few hours. Crank engine with plug out. Put plug in and see if it fixes the misfire. Good luck.

Is the possibility of carbon build up on the number 1 piston which is soaking up fuel the thought that you have? This could be. Just trying to understand your reasoning.
Thank you

Maybe piston carbon causes a lean condition misfire or cylinder ping. Maybe a piston soak will free up a piston ring. It is easy to do a piston soak.

It seems to me that it would be worth a try to do the piston soak. Also, If a person had access to a borescope that could be used to take a look at the top of all pistons.

Ok heres one borascope pic of #1

Here is another wow crusty
sprayed some pb blaster in there and some carb cleaners guess I'll let it sit a day or two

Well pics didn't go threw oh well I got a cylinder leak down tester on the way too I'll let you know how that goes soon

The pictures did show up and as you say WOW! Lots of carbon deposits it appears. We could possibly be on to something thanks to Irad and his idea to try a piston soak. We will be interested to see how this turns out.

Well between flooding rains snow and back to flooding rains this evening turned out mild. Put the China made cylinder leak down detector on 1 and 3 to compare them. Had 18 percent in both cylinders. It zeros at 30 psi and it sound like it was blowing small chunks out of it to start with and no I didn't blow it into the cylinder I want to see how it worked so I was blowing it into the air and capping it off with my finger. I had to make a adapter for the hose because the threads were not long enough. I used one of those oil burning plug adapters and even had to modify it because the threads were to deep in it so I took my porta band and cut it off to make it work and sanded it off smooth so the o ring would seal up against the hose. The percent reading blowing out into the air only goes to 80% but it may be the size of the hole in my adapter. I should have tried it with out it on the hose. Only place I heard air leak was a little in the crank case getting by the rings. None in the intake none in the exhaust or the radiator.

Home made adapter

small hole may need to drill that out

This is the tester used the balloon to get me to top dead center on compassion stroke.

Hose end is to short to thread into spark plug holes
oh yeah soaked the cylinder for 24 hours warmed engine back up and did it again with no change. Swapped plugs and wires between 1 and 3 still get the p0301 after clearing codes after a long idle. I also tried wriggling the injector wires just for giggles no change.

Well tested all the injectors with injector test in the medium pulse all went from 48 psi to 32 psi so that'* not the problem

On my 95 mustang it has a spout connector you can disconnect that put the timing back to base timing I just wonder if disconnecting wire B on the ICM would do the same. Does any one know?