Troubleshooting - Engine has poor performance and poor acceleration
Article #542291
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- Improper, old, or contaminated fuel
- Replace fuel. Top Fuel is recommended.
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- Glow plug fouled or weak
- Check for solid green light on EZ-Start® control box gow plug status LED. Test and/or replace glow plug.
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- Carburetor incorrectly adjusted
- Readjust carburetor to factory break-in settings
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- Dirty air filter
- Clean and relube or replace air filter
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- Slipper clutch loose
- Tighten the slipper clutch
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- Engine clutch slipping
- Replace clutch shoes
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- Excessive load on the engine
- Check for bound drivetrain
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- 2-speed shift point needs adjusting (2-speed vehicles only)
- Tighten the shift point adjustment screw clockwise to raise the shift point (shift later) or counterclockwise to lower the shift point (shift sooner).
- 2-speed shift point needs adjusting (2-speed vehicles only)
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- Stripped or worn spur gears
- Replace the spur gear(s) before continuing to run the model.
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- Carburetor low speed mixture set too rich
- Adjust the TRX 2.5/3.3 or Pro .15 Low speed needle setting. See also carburetor care for more information.
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- Engine excessively worn
- Repair or replace engine through the Traxxas Engine Replacement Plan.
