As far as the testing. You need a test light, not a voltmeter for checking the injector. You need to check for voltage at both wires to the injector with the key in the on position.
As far as the coil, you need a scope to test the output of the coil. You could try and switch with another cylinder and see if the miss travels to that cylinder.
Do the compression test first.
Roy
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Saturday, November 27th, 2021 AT 7:49 AM
JEPWO6
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13 POSTS
I don’t think it is a compression problem because the misfire started right after I had the sparks plugs changed.