coil
It’s a small device that turns the car’s battery power into a spark for each spark plug, which starts the engine.
The coil, or ignition coil, steps up battery voltage to create the spark needed for combustion in each cylinder.
Hear It Discussed
"For example, you could have a bad coil, you could have a bad coil wire, you could have spark plug wires, you could have a bad plugs, bad distributor cap."
#2642: Overtightening Our Belts The Best of Car Talk
"Yep. Put some KW put some whatever coil a good coil. Yeah. Well, that's what I was like, you guys fucking rally guys."
M5 Touring 2nd Take; PNW Trip Report; CA Tire Update The Smoking Tire
"I tried changing the spark plugs. I had the coils tested and everything keeps coming back fine."
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