Misfire Detected On Startup (First 1000 Revolutions)

The engine detected misfires during the first few seconds after starting, when the engine is cold and most sensitive to combustion problems. This can indicate worn spark plugs, fuel injector problems, or weak ignition coils that worsen in cold conditions. Have the ignition and fuel systems inspected soon, as cold-start misfires can damage the catalytic converter.

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