BY Mechanic

Engine Misses under load: resistance of all injectors around 11.7 ohms; stethescope test of all injectors indicate they are functioning across a range of RPM (2K to 3K); ignition coil primary resistance of 1 & 2 low 0.1 ohms, secondary OK; all plugs firing; miss is most pronounced under load - Is this an igniter, cam sensor or crank sensor issue? Don't want to just start replacing parts.