would changing spark plugs triggers check engine light on?
no...shouldn't but perhaps an electrical connector that got bumped in the process could....double check your footprints to see if somethin' got bumped~ You could always reset the trouble codes with one of these...and tell what's up with the bitch~
Normally it would not, unless you cracked an insulator or damaged a boot causing the spark to jump.
if you crossed the wires by mistake on two cylinders ,hell yes them brains measure where each piston is at any given time and expects the spark to light up when at tdc.!
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