Troubleshooting - Engine starts and then stalls
Article #542311
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- Carburetor incorrectly adjusted
- Readjust carburetor to factory break-in settings for TRX 2.5, 2.5R or 3.3 When using fuel with 10% nitro, the hi-speed mixture setting should be 1/2 turn leaner
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- Idle speed set too low
- Increase idle speed TRX 2.5/3.3 or Pro.15.
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- Air bubble in fuel line / insufficient fuel tank pressure
- Check for leaks or pin holes in fuel tank and fuel lines. Replace tank and/or fuel lines if necessary.
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- Fuel flow blocked
- Check that all fuel lines are clear with no pinhole leaks. Check for dirt blockage in the carburetor fuel inlet and high speed needle seat/ Install inline fuel filter. If fuel does not flow through the carburetor, remove and clean the carburetor's internals with a nitro cleaner solution from your local hobby shop.
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- Engine excessively worn
- Repair or replace engine through the Traxxas Engine Replacement Plan.
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- Broken / stretched clutch spring
- Replace clutch spring.
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- Roller clutch bearing seized to starter shaft
- Remove and clean or replace the roller clutch bearing.
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- Recommended reading
- Carburetor Care for Your TRX 2.5 and 3.3 (see also carburetor settings for Pro.15)
