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What causes a mower engine Briggs Stratton 25hp to surge with gas and flood out after starting normally?

April 26, 2017briggs stratton causes engine flood Gas mower surge

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What causes a mower engine Briggs Stratton 25hp to surge with gas and flood out after starting normally?

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The engine is receiving more gas than it can consume. Sometimes the carburetor needle valve will vibrate to the open position or the float valve will stick open. Also, a fouled spark plug will not provide sufficient spark to ignite the fuel. Check out a lawn mowers and small engines repair manual from your public library for troubleshooting and repair procedures.