Question about 2013 KTM SX 50 MINI

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2013 ktm 50 sx spits and sputters and has lost power

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  • KTM Master
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Hi, Kyle and the usual suspects are:
1. Severely discharged or a damaged battery should have 12.5 volts or more and be able to pass a proper "LOAD" test if necessary, you may have a cursory reading of 12.5 volts or more but little or zero amperage the battery is faulty and must be replaced.
2. Check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Spark plugs in bad condition or partially fouled.
4. Spark plug cables in bad condition and leaking check for spark leakage in the dark
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
8. Faulty CKP or CMP, MAP, ETS, ATS, TPS, O2 sensor.
9. Dirty air filter.
10. Intake air leak.
11. Water, dirt, or rust in the fuel system.
12. Carburetor damaged, contaminated, sticky float, plugged jets.
13. Multiple carburetors out of sync.
14. Fuel filter clogged.
15. Old or contaminated fuel.
16. Fuel tank vent system plugged or carb vent line closed off.
17. Gas cap diaphragm valve faulty.
18. Vacuum line from intake manifold to fuel valve is broken, cracked, pinched, or missing.
19. Carburetor controls misadjusted.
20. Incorrect valve timing.
21. Valve springs floating, weak, or broken.
22. Damaged intake or exhaust valve.
23. Incompatible performance parts.
24. Control module may be in "LIMP" mode
25. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
KTM 50 SX Repair Manual
http://www.partsfish.com/page/oem-parts-for-ktm
KTM 50 SX Owner Manual
2013 KTM 50 SX specifications and pictures
https://en.wikipedia.org/wiki/KTM_50_SX_Mini

Posted on May 07, 2017

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dmsr63
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SOURCE: 2006 KTM 125 sx high revving out problem

Look into your power valve. If it doesn't operate freely, you won't get peak performance. They can get gummed up.

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SOURCE: spits sputters and backfires

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SOURCE: ktm jr 50 sx kickstarter

try changing the oil,
had the same prob seem to work, dont know why,
may be due to water.

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SOURCE: my ktm 525 sx does not start after a long time

just got ktm 525 sx finding it very hard to kik start all time , is ther a method i should be following ??? pls help

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