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LCT Small engine stops after a few seconds

When an LCT small engine runs then dies, starts but won't stay running, or stalls after starting, the most likely cause is a clogged carburetor. Stale or ethanol-blended fuel left in the carburetor is one of the most common root causes on seasonal equipment. As fuel breaks down, it leaves a sticky residue that can block the carburetor passages, main jet, or needle valve and limit fuel delivery. Clean the carburetor with carburetor cleaner, then consider a carburetor repair kit or complete carburetor replacement if cleaning does not restore operation. If the engine still runs for a few seconds then dies, 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 address common LCT engine starts then dies and engine runs for a few seconds then dies problems. Enter your model number to find the exact carburetor, repair kit, or fuel cap replacement part for your specific engine.

01 - LCT 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 - LCT 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 - LCT 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 LCT small engine run for a few seconds then die?
Can a clogged fuel cap cause an LCT engine to start and then die?
What should I check if my LCT small engine starts but will not stay running?
Could an ignition or safety switch make an LCT engine die after starting?
How do I find the correct replacement part for my LCT small engine?