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Have a 2018 ktm 50 sx and it was running two days ago. Now…

Customer Question
Have a 2018 ktm...

Have a 2018 ktm 50 sx and it was running two days ago. Now it won't start. Have spark, checked the top end. Noticed it was leaking a litttle oil out of the exhaust flange when I was kicking it. Could it be the stator or not

Mechanic's Assistant: Have you ever replaced the gaskets? Maybe the hoses?

Haven't changed anything. Replaced both radiators. Just put a new fmf exhaust on it two weeks ago. It won't even try to start

Mechanic's Assistant: What is the model of your '50 motorcycle?

Ktm 50 sx

Mechanic's Assistant: Are you fixing your bike yourself? What have you tried so far?

I was trying to fix it myself. I cleaned the carb, checked the spark, checked the top end, and changed the kill switch

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

Don't think so

Submitted: 4 months ago.Category: Motorcycle
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Answered in 8 hours by:
12/3/2017
Motorcycle Mechanic: Louie, Technician replied 4 months ago
Louie
Louie, Technician
Category: Motorcycle
Satisfied Customers: 13,222
Experience: 25+ yrs. experience
Verified

Hi and welcome to JustAnswer, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.

Initially, it would least likely be stator/ignition related since there is spark.

Still, let's try check and review the basics. Proposed preliminary tries (if have not been done):

  • • determine the burn color of the spark plug tip;
  • • check if there is fuel at the carb bowl;
  • • drain carb bowl to see fuel quantity and quality;
  • • temporarily remove the air box;
  • • attempt to start with the carb mouth/air entry covered by the palm of your hand;
  • - feel if there is strong suction; and
  • - if your palm would get wet with fuel;
  • • consider checking / cleaning the bottom of the crankcase;
  • • as well as the exhaust system.

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