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HomeRepair HelpTecumseh RepairTecumseh Small engine stops after a few seconds Repair
Tecumseh Small engine stops after a few seconds
When your Tecumseh small engine runs then dies, starts but won’t stay running, or stalls after starting, a clogged carburetor is the most likely cause. Stale or ethanol-blended fuel left in the carburetor during storage can evaporate and leave a sticky residue that blocks fuel passages, making the engine run for a few seconds before it cuts out. Clean the carburetor with carburetor cleaner, then rebuild or replace it if cleaning does not restore steady operation. A Tecumseh small engine carburetor repair kit can provide the gaskets, needle valve, and other parts needed for a rebuild. If the carburetor is clean, check the fuel cap. A clogged fuel cap vent can create a vacuum in the fuel tank and stop fuel from reaching the carburetor. Loosen the cap slightly and restart the engine. If it stays running, replace the fuel cap. These checks can help fix a lawn mower that runs then dies and similar small engine no-start problems. Enter your model number to find the exact replacement carburetor, repair kit, or fuel cap for your specific Tecumseh engine.
01 - Tecumseh Carburetor
The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the engine for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the engine to stall. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
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02 - Tecumseh Carburetor Repair Kit
The carburetor might be clogged. A clogged carburetor is most commonly caused by leaving fuel in the lawn mower for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and prevent the engine from starting. If the carburetor is clogged, try cleaning it with carburetor cleaner. If cleaning the carburetor isn’t effective, rebuild or replace the entire carburetor.
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03 - Tecumseh Fuel Cap
As fuel is consumed by the engine, the level in the fuel tank lowers. To make up for this, the fuel cap uses a small vent to allow air to enter the tank. If the fuel cap vent is clogged, air won’t be able to enter the tank and a vacuum or “vapor lock” will occur. This stops the flow of fuel to the carburetor causing the engine to stall. To determine if the fuel cap vent is clogged, try slightly loosening the cap and then starting the engine. If loosening the fuel cap allows the engine to stay running it is likely clogged and will need to be replaced.
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Frequently Asked Questions
Why does my Tecumseh small engine start and then die?
Can old gas cause a Tecumseh engine to run for a few seconds and stop?
How can I tell if the fuel cap is making my small engine stall?
How do I find the correct Tecumseh carburetor or fuel cap replacement part?
What should I check before repairing a Tecumseh engine that starts and dies?