Q: Not getting pulse at injectors 1 and 4.

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Car is running rough, learned that injectors 1 and 4 are not pulsing. I've replaced the ignition pickup coil, ignition control module, plugs, wires, cap and rotor. All grounds have been cleaned up. Verified getting spark at all plugs, and the firing order is correct. I've also tried two ignition control modules. I have no idea what else to check, other than maybe the injector harness?
My car has a manual transmission.

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