KTM Motorcycles - Recent Questions, Troubleshooting & Support

That would be like riding a fixed wheel bike.Think about how you will stop and start. Only hydraulic fluid will leak. Bad idea!

Question edited for clarity. That sounds like it is just a bad connection somewhere or possibly a bad switch. Remove the battery leads and clean the lead contacts and battery posts with a wire brush. Smear with Vaseline and reconnect. Remove the starter leads and do the same. Then it could be the Starter Relay https://www.google.com/search?q=ktm+450+sx-f+starter+relay+location Or Starter Button https://www.google.com/search?q=ktm+450+sx-f+starter+button+replacement ..

personnaly I would replace cylinder with new OEM

All dirt bikes have a VIN. It is on the steering neck. https://www.google.com/search?q=vin+on+my+ktm+300 ..

How do you know its a weak spark? Is this a visual check? Will the bike start with the correct new spark plug? On some bikes, you can hardly notice the spark when looking at the spark plug laying on the head, Try looking at night in the DARK!

Have you checked battery connections. Run switch in the correct position? Checked spark plug for debris? Just thinking out loud..

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The lightweight, CNC-machined 21? and 18? rims give a solid foundation. Add the MITAS E07 tires to the equation, you've got a long-lasting grippy tire for the off-roads. https://gearhonest.com/ktm-690-enduro-r-review/

Drain oil. Use degreaser to clean area. Use JB Weld & allow to set up properly before adding oil.

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Vapor lock

Hi, try to see this link and looking for the manual that you need. https://www.pdfmotomanual.com/manuales/ktm/eng I hope to give you an help. Luca

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Hi, most likely your cdi unit or ignition coil needs replacing.

took me a min or two of WTF-ing to see pic and realize you meant a 2-stroke motorcycle..

Hi I have a KTM 65 and it's got oil residue coming out of the exhaust, could it be from too much oil in the fuel? Or too much oil in the oil pan as I just replaced the oil pan bolt and put about 250ml of oil in it, I'm thinking that might be a bit too much?

Turn your ignition on and jump across your starter solenoid. If you cant find the solenoid and if you have a piece of reasonably heavy wire. Run the wire from the positive terminal of your battery to the post on the starter with the heavy red wire. It should start up. Get a new key asap.lol

That's liquid-cooled? The problem sounds VERY much like water or coolant getting into a cylinder.

thermostat stuck...or radiator block..