Question about 2006 KTM 50 Senior Adventurer

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My son's KTM 50 senior pro doesn't start. has petrol vapour coming out of the pipe.

My son was riding his KTM 50 Pro when it just bogged down and stopped. I've tried to start the bike many times, however, it only idles, then when I try to accelerate, it just dies. I've checked the plug...and there seems to be a fair amount un-burnt fuel on it. I've installed a new plug and cleaned the carby. Any feedback would be very much appreciated. Thanks.

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The engine is running too rich. The carburator needs tuning to get the fuel mixture correct or the choke may be stuck in a partially closed position.

Posted on Feb 11, 2012

Testimonial: "Hi Chris, many thanks for your feedback. You were 100% correct! I performed what you stated and she fired-up! Thanks again..."


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Posted on Jan 02, 2017


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My brother has a 2004 ktm pro senior 50 went for a ride after 20 minutes it died and now the spark just comes and goes..can someone help me, please

Hi, Bowe the following applies to carbureted also fuel injected models and the usual suspects are:
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06 ktm 50 jr, runs good cold, but heats up quick. When hot its not as responsive, bogging on bottom end, sounds bad. Clears up in mid to top. Piston, rings, cyl, water pump all look fine and appear to be...

Thank you for contacting FixYa with your inquiry.
Sounds like you have a low coolant, restricted flow, or a water pump issue.

Make sure the coolant is present when cold and up to the top fill level. If not fill with 50% antifreeze and water solution.
Go to this link and drill down to info below. Check out the visual of the radiator parts. 2005 > 50 SX PRO JUNIOR LC > ENGINE > COOLING SYSTEM
Inspect the radiator fins and make sure there is not any obstructions preventing air flow. Inspect all the fittings to make sure no dents or restrictions exist. Twists or kinks in hoses. Tighten all hose clamps to ensure no coolant is leaking. Drain the transmission fluid and refill it to the proper level (Low oil would increase low rpm friction)

Go to this link and drill down to the case parts: 2005 > 50 SX PRO JUNIOR LC > ENGINE > ENGINE CASE
Disassemble the water pump from the left side case and inspect the impeller and drive parts.
If you have the owners manual look under the problem solver section for overheating for pictorials.
Let us know if we can provide further assistance.
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Jul 19, 2011 | 2005 KTM 50 SX Pro Junior LC

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My ktm has plenty of spark but is flooding itself out everytime it is fired. Sometimes it will run for a bit then bog out. Other times it will start and just run for a few seconds then bog out. The plug is...

Thank you for contacting FixYa with your issue.
Usually when it comes to excessive fueling or gas overflow we should start by looking at the float or the needle valve turning of the fuel actuated by the tab on the float turnoff. Chances are the bike was stored over the winter and the gas shellacked up and the float or needle valve is sticking (or possibly hanging in the open position in this case) .
Remove or disassemble the carburetor and clean the the jets, the float valve, (confirm the mini spring is properly connected and attached). Check the float to make sure it's operative and nothing is bent or dented so it's hanging. Give everything a thorough cleaning and air blow with with pressure can.
If the jetting has been changed out go back to stock jetting. Check to make sure the Thumbscrew for the air jet hasn't vibrated off. Should be out about 1 1/2 turns from the home position.
Let us know if we can provide further help, and thanks again for using FixYa.
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06 ktm 50 pro senior bogs after warming up

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