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Jun 16, 2023 · (The Short Answer) Surging results from the engine having an unbalanced fuel-to-air mixture ratio. The most likely fault you’ll run into will be a problem with the carburetor resulting in the fuel-air mixture erratically running lean or rich. Potential Reasons for a Lawn Mower That is Surging.
Apr 20, 2021 · But when the vacuum pulled the fuel, it collapsed the inner fuel line liner and starved it for fuel. We used a surrogate fuel tank and line to isolate the fuel line issue. Replace the line to fix that one.
Sep 14, 2020 · Next time it happens pull the fuel line from the item closest to the fuel tank and blowback hard through the tank. Problem goes away for another 20 minutes or so = trash build up. Note the fuel pump has a check valve on it so don't try blowing backwards through it.
Oct 6, 2024 · If your lawnmower surges up and down – you can repair it as follows: How To Repair Bad Fuel in Lawnmower. Drain old gas from the tank. Use a siphon if you have one – and save spills on the engine and floor. Add a fuel stabilizer to the gas tank (manufacturer’s recommended mix ratio) and top it with a full gas tank..
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Jun 7, 2017 · This air enters through small holes in the gas cap. If those holes are clogged, the pressure inside the tank will drop, keeping the fuel from being drawn through the fuel line. Lines and filters should be inspected for clogs and cracks to ensure the fuel leaving the tank makes it to the carburetor. If you have old fuel, it may not want to burn.
Jun 24, 2020 · 615. 74K views 4 years ago #lawnmower #hunting #honda. Does your engine hunt or surge at part throttle or run rough? It may be caused by this little jet being plugged in the top of the carburetor...
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- Bear Kreek Boys
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Aug 21, 2024 · Clogged Air Filter: A dirty air filter restricts airflow, creating a lean fuel-air mixture. This can lead to a surge as the engine struggles to get enough air. Fuel System Problems: Issues with the fuel lines, fuel filter, or fuel tank can lead to clogged fuel passages, restricting fuel flow.