Trouble locating source of Cylinder 4 Misfire!

[Dreadknought]

I have had a Cylinder 4 misfire since I did my wire tuck. I have swapped the plugs, COPs, and injectors to rule them out. I have tested the splices for the #4 injector and coil harnesses but am not sure if I have done it correctly. Don't know how to use a multimeter and am kinda winging it. Anyone know what settings I should put it on tpo check for a short?

 

[JeremyH]

Splices? You need to solder those connections!

 

[Dreadknought]

Yes they were all soldered and and covered in heat shrink...