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Brian SullivanAug 15, 2025
What to do if my KTM 250 SX-F EU 2010 Motorcycle engine turns but does not start?
- JJennifer MillerAug 15, 2025
If your KTM Motorcycle engine turns but does not start, consider these potential causes: operating error, old fuel in the float chamber (if the motorcycle was out of use for a long time), a flooded engine, an oily or wet spark plug, an incorrect electrode distance on the spark plug, a defect in the ignition system, a short-circuit cable, oxidized plug connectors, or water in the carburetor. Go through the engine starting steps. Empty the carburetor float chamber if there is old fuel. Clean and dry the spark plug, adjusting or replacing it if needed. Adjust the plug gap to 0.7 mm (0.028 in). Check the wiring harness and electrical system for short circuits. Clean oxidized plug connectors with contact spray. Have the ignition system and carburetor components checked.