Verify all your ECU wiring as well... I chased a #6 misfire for weeks (Verify coil packs, injector, compression, timing, spark plug, etc) before I did the final test of checking continuity from the ECU plug to the injector and coil pack. Turns out the ECU harness had been screwed with and the wire for the #6 injector was plugged into the wrong spot on the ECU (VTC output I believe). Just something to think about...
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