rotor
It’s a rotating part that sends sparks to the plugs in order.
In a distributor-based ignition system, the rotor directs high voltage from the coil to each spark plug.
Hear It Discussed
"But the big thing is, I'll get it going, and then it'll run really rough, and then it'll come, it'll die, and then it won't start again. Right. And I'm wondering if it's the rotor, because I'm..."
#2611: Hey, Mr. Spaceman The Best of Car Talk
"...there's all the rotor is showing. The pad, the caliper is basically banging."
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"[1548.1s] wire set, distributor cap, rotor, fuel filter, [1552.5s] manifold pressure sensor."
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