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Old 10-20-2020, 08:19 AM
its a ktm's Avatar
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Question heeelp my dirt bike won't start

My 2020 ktm 250 exc won't start I checked the engine and I found nothing wrong with the engine. Please any ideas I need your all's help.I don't know what else to check.

Last edited by its a ktm; 10-20-2020 at 08:27 AM.
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Old 10-20-2020, 09:11 AM
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What all did your check?
Do you have a good bright blue spark?
Have you done an OHMS test of the coil?
How old is the fuel mix?
What does the compression read?
Are you getting fuel to the carb?
How old is the spark plug?
When was the last top end done?

Paw Paw
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Old 10-24-2020, 03:20 PM
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PawPaw is steering you in the right direction. Check the basic necessities for combustion: Suck, squeeze, bang, blow (formally: intake, compression, combustion, exhaust)
Check the intake side of things (clean filter, injection/carburetion, fresh fuel)
Low compression will affect all of these. A leak down test or a compression test will give you a good idea of the condition of the rings/cylinder/piston. You can also take the pipe off and see if you can get a decent look at the piston through the exhaust port.
Check the ignition components. No spark will result in no bang.
Check that the exhaust is unrestricted. Mice/rats will crawl up in the muffler sometimes and make a warm nest.
When I want to test if it's fuel, I spray a little starter fluid down the intake to see if it sputters. If it does, then I usually begin to look on the fuel delivery side of things. If it doesn't, then compression and spark are looked into.
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