Maybe put #3 injector in a different hole and see if the problem moves to. If it does you'll know it's the injector right?
Ok. So figured out I had a fault for barometric pressure sensor and my oil pressure said 158
, I had the sensor harness on them switched around. Now no fault and runs better. Number 3 is still off a little but the slight miss I was hearing is gone . But number 3 is still off from the rest. Not sure if what its showing is an acceptable difference from the others