Q
how to know if engine is misfiring
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Recognizing engine misfiring involves identifying key symptoms, such as irregular or jerky acceleration, reduced fuel efficiency, an uneven or rumbling idle, and sometimes an illuminated check engine light. Misfires occur when the engine fails to combust fuel properly, often due to issues with spark plugs, ignition coils, fuel injectors, or timing. Modern vehicles equipped with OBD-II (On-Board Diagnostics) systems will trigger a diagnostic trouble code (DTC), often stored as P0300 for random misfires, or P0301, P0302, etc., indicating specific cylinders misfiring. Using an OBD-II scanner can pinpoint the issue directly. Addressing misfires promptly is critical to avoid potential damage to the engine or catalytic converter. Regular maintenance checks, including inspection of spark plugs and fuel system components, can help prevent misfires.
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