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HomeRepair HelpWeed Eater Mower RepairWeed Eater Lawn mower starts then stalls Repair
Weed Eater Lawn mower starts then stalls
If your Weed Eater lawn mower starts then stalls, the problem is usually in the fuel system, especially a clogged carburetor. Old gas can leave behind a sticky varnish that restricts fuel flow, so a lawn mower starts then dies, runs then shuts off, or only runs for a few seconds. Start by inspecting the carburetor and cleaning it with carburetor cleaner. If cleaning does not fix it, a carburetor repair kit or a complete replacement carburetor may be the better fix. Next, check the fuel cap vent. A plugged fuel cap can create vapor lock, stopping fuel from reaching the carburetor and causing the mower to start and then stop. Slightly loosening the cap during a test run can help confirm the issue. Bad or stale gasoline is another common cause and often goes hand in hand with carburetor trouble. If the fuel system checks out, inspect the spark plug for cracks, heavy carbon buildup, or electrode damage, and test it with a spark plug tester for a strong spark. Enter your Weed Eater model number on RepairClinic.com to find the exact replacement parts that fit your mower.
01 - Weed Eater Lawn Mower Carburetor
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 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 - Weed Eater Lawn Mower 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 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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03 - Weed Eater Lawn Mower 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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04 - Old or Bad Gasoline
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 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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05 - Weed Eater Lawn Mower Spark Plug
Inspect the spark plug for signs of wear or damage. If the porcelain insulator is cracked, an electrode is burned away or damaged, or there is heavy carbon buildup at the electrode, replace the spark plug. To determine if the spark plug is defective, use a spark plug tester. You should see a strong spark between the tester’s terminals when the engine is cranking. If there is no spark, this indicates that the spark plug is defective and should be replaced.
Highly Likely
Frequently Asked Questions
Why does my Weed Eater lawn mower start then stall after a few seconds?
How do I know if the fuel cap is making my Weed Eater mower starts then stalls?
Can a bad spark plug cause a Weed Eater lawn mower to start and then die?
Should I clean or replace the carburetor if my Weed Eater lawn mower only runs for a few seconds?
How do I find the right Weed Eater carburetor, fuel cap, or spark plug for my mower?
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