My 5.0 non supercharged started missing on a grade. Engine sounded rattly, found cylinder 7 missing on scan. 118K miles.

The timing chain had not been making any bad sounds up til then. The engine actually sounds ok now, except for the miss on number 7.

I would like to do compression and a bore check on 7. I can't find what relays/fuses need to be pulled to disable the fuel and ignition. All those pages in the manual isn't helping. Hopefully someone here can.

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