2016 ktm 250sxf won't start

p.dizzle93
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p.dizzle93
The bike just won't fire , every once and a while when I hit the electric start it Will back fire but thats as much as I'm getting , I have replaced fuel filter , it only has 11 hours on it I picked it up from the dealership and put an hour meter on it before I even started the bike so I don't see how it could be the valves , it has fresh fuel in it gas is mixed 50 non ethanol pump / 50 vp4 . if anyone has something I could try please let me know , I'm not a mechanic by no means but I can find my way around the bike .
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CarlinoJoeVideo
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CarlinoJoeVideo 5/14/2017 11:50am
5/14/2017 11:50am
Do you hear the fuel pump working?

What made it stop working? Where you riding, washing the bike or was is just in the garage?
ktm-5
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ktm-5 5/15/2017 3:50pm
5/15/2017 3:50pm
Yup need a few more details. Does it have spark? Compression?
p.dizzle93
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p.dizzle93 5/15/2017 5:18pm
5/15/2017 5:18pm
First excuse my terminology because it's probably not gonna be the same as yours but the Fuel pump is definitely working pulled the gas line and it was shooting out , i went to a race Saturday night came home backed truck in my garage and didn't unload it till the next day, washed the bike , I had the air filter off but I had one of those twin air air box covers on it , and put the plastic back on , finish washing the bike and hit the electric start button when I was wiping off the handle bars while the cover was still on the bike . I haven't checked the spark plug , and I don't know how to check compression
ktm-5
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ktm-5 5/15/2017 5:35pm
5/15/2017 5:35pm
For compression wise when we lost our topend u could hear it spinning much faster than normal so I knew it wasn't right. Also are u getting a code from your light behind number plate? Maybe it's possible some wire connection came loose?

The Shop

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p.dizzle93
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p.dizzle93 5/15/2017 5:43pm
5/15/2017 5:43pm Edited Date/Time 5/15/2017 5:46pm
it was 1 long 2 short the whole time while I was riding and racing it , but I noticed it the day before the race looked it up in the manual and it said it was a tempature warning
p.dizzle93
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p.dizzle93 5/15/2017 5:49pm
5/15/2017 5:49pm
when I noticed it I noticed it in my room when I hit the electric start and it was 67 degrees in my house so I shrugged it off As the bike being too cold . But it never went away while I was riding or after I warmed it up .
ktm-5
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ktm-5 5/15/2017 11:58pm
5/15/2017 11:58pm
Sounds electrical to me then. Maybe a sensor is bad and not allowing the bike to start
Factor E
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Factor E 5/21/2017 10:16am
5/21/2017 10:16am
Pull all connections apart and use contact cleaner and compressed air.
Since you are going to take the connections apart use dielectric grease around the
connections. If that doesn't work and you still get backfiring, then it may have jumped
time on the cam. Check timing marks
Luc_Caouette
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Luc_Caouette 9/3/2018 11:00pm
9/3/2018 11:00pm
What ended up being the problem, I have one right now doing the same thing.
max_hahnktm
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max_hahnktm 7/8/2023 3:51am
7/8/2023 3:51am
p.dizzle93 wrote:
The bike just won't fire , every once and a while when I hit the electric start it Will back fire but thats as much as...
The bike just won't fire , every once and a while when I hit the electric start it Will back fire but thats as much as I'm getting , I have replaced fuel filter , it only has 11 hours on it I picked it up from the dealership and put an hour meter on it before I even started the bike so I don't see how it could be the valves , it has fresh fuel in it gas is mixed 50 non ethanol pump / 50 vp4 . if anyone has something I could try please let me know , I'm not a mechanic by no means but I can find my way around the bike .

I have the same with my bike and have done the same thing as you what was the problem with your bike 

Factor E
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Factor E 7/8/2023 10:25pm
7/8/2023 10:25pm

Check your woodruff key on fly wheel

desertratlife 7/10/2023 10:06am
7/10/2023 10:06am

When you have strange issues on these bikes, always check the spark plug cap.  They commonly crack on the inside after being pulled out and inserted numerous times.

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