2011 Aveo Misfire (recurring problem)

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Wow your right. That sucks. Either you buy four plug testers or you had two bad coil packs in a row.


So the next thing is to isolate the wire feeding that plug and make sure it's firing. It almost looks like there is send/return for each coil. So each coil must be individually fused. At least that's what I found on my boat. Did you check your fuses? So it must go from the fuse to the computer, and then to the coil pack. So at each stage there must be way of checking the wires.