A "Daihatsu ignition coin" likely refers to a faulty ignition coil in a Daihatsu vehicle, not an actual coin. The term is a misnomer for an ignition coil, which is a crucial part of the ignition system that creates the high-voltage spark needed to ignite the fuel in an engine's cylinder. Signs of a bad ignition coil in a Daihatsu, or any other car, include engine misfires, a lit check engine light, poor gas mileage, and sudden backfires.
What an ignition coil does
Creates high voltage: It transforms the car's low voltage into the high voltage needed for the spark plug to create a spark.
Ignites fuel: This spark is what ignites the air-fuel mixture inside the engine's combustion chamber, creating power.
Signs of a failing ignition coil
Engine misfires: The engine may stumble or feel rough when accelerating.
Check engine light: A malfunctioning coil will often trigger the check engine light on your dashboard.
Poor gas mileage: A less efficient spark can lead to fuel not being burned completely, which reduces fuel economy.
Sudden backfires: Unburned fuel can ignite in the exhaust system, causing a loud "backfire" sound.
Diminished power: The engine may feel less powerful than usual.
Hard starts: It can be difficult to start the engine.
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