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An outboard motor may surge due to several factors, including fuel delivery issues, such as clogged filters or a failing fuel pump, which can disrupt the flow of gasoline to the engine. Air leaks in the fuel lines or improper carburetor adjustments can also lead to inconsistent fuel-air mixtures, causing the engine to surge. Additionally, issues with the ignition system, such as faulty spark plugs or ignition coils, can result in irregular firing and surging during operation. Regular maintenance and inspections can help identify and resolve these issues.

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3w ago

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