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Author Topic: 2013 KTM 150 problems  (Read 9389 times)

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Offline SpeckleZz

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2013 KTM 150 problems
« on: May 20, 2013, 07:32:19 PM »
Let me tell you the story

Picked up my KTM 150 at Christmas and it's been a great bike all winter had no problem with it on my field, that all changed on april 16th. Decided to get away from my field and venture to one of my local tracks, it's a sand track but not stupidly deep, it ran fine the first session then two laps into the second session it stopped instantly. I knew the bike had ceased, and was surprised that after 8 hours of riding it had blown up. Got home that day and took the bike apart, the piston was badly damaged and that's all. I was advised to put a bigger jet in so I swapped the standard 182 to a 185.



after that the bike ran fine the next 2 weeks then just last sunday the bike blew up again 3 laps into practice, the dirt type was loamy.


 
what is going on why is it ceasing up? please help!!!
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline JoeyG

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2013 KTM 150 problems
« Reply #1 on: May 20, 2013, 08:42:45 PM »
Is that the intake or exhaust side? how does the cylinder look?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SpeckleZz

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2013 KTM 150 problems
« Reply #2 on: May 20, 2013, 10:20:13 PM »
The piston is scratched on the exhaust side both times and has welded itself to the barrel, and the cylinder is scratched and chipped
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline _X_

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2013 KTM 150 problems
« Reply #3 on: May 20, 2013, 11:10:04 PM »
what does ktm suggest for octane rating? do you use 93 or above?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline evo550

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2013 KTM 150 problems
« Reply #4 on: May 20, 2013, 11:13:06 PM »
I'd say lean...could be an air leak somewhere or jetting.
Have you cleaned the cylinder yet ?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline HCE

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2013 KTM 150 problems
« Reply #5 on: May 21, 2013, 12:31:27 AM »
Looks like some pits on top of the piston.  I would be questioning the cause of that also.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline Watson777

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2013 KTM 150 problems
« Reply #6 on: May 21, 2013, 02:42:49 AM »
running too lean, possible air leak and you need higher octane fuel! that is just a few of the problems. Could be a # of other things as well
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline fabbo

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2013 KTM 150 problems
« Reply #7 on: May 21, 2013, 09:38:32 AM »
What is your fuel/oil ratio? I prefer more oil in my mix if I am hitting the dunes,  and not to sound to weird but were your piston rings correctly installed and locked in properly? just so unusual.

I really hope we can all work this one out for you.

« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline evo550

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2013 KTM 150 problems
« Reply #8 on: May 21, 2013, 10:25:07 AM »

An old CR250 piston, went through 2 within an hour of use, turned out to be a lean air/fuel mixture (in my case an air leak). It was still running with this.
Has bike ever "run on" or reved high with shut off throttle after being open under power ? (sort of like a stuck throttle cable). What does your spark plug look like?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SachsGS

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2013 KTM 150 problems
« Reply #9 on: May 21, 2013, 03:05:52 PM »
Just making sure we cover all the bases - coolant in the engine and a functioning waterpump? Plug check at anytime?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline eprovenzano

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2013 KTM 150 problems
« Reply #10 on: May 21, 2013, 04:11:19 PM »
The KTM 150 are notorious for having to go big on the jetting...  I suggest you go to KTMTalk.com and check out the jetting section.  Many of the guys on their have figured out how to properly jet the little screamer.  I'm sure they will help you
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Eric Provenzano
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Offline lauterbacher

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2013 KTM 150 problems
« Reply #11 on: May 21, 2013, 05:32:46 PM »
I had the same problem with another bike, And it was a leaking base gasket. 3 siezes later I used a $17.00 self made leak tester found on google. If interested just use your search. Its perfect now and Idles like a watch just ticking over.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline metal_miracle

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2013 KTM 150 problems
« Reply #12 on: May 21, 2013, 08:15:13 PM »
That piston looked like where a guy had used 4 stroke oil instead of the regular 2 stroke.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SpeckleZz

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2013 KTM 150 problems
« Reply #13 on: May 21, 2013, 10:56:27 PM »
Wow, thanks a lot for all your help

to answer a few questions

not sure with the octane, but it's unleaded petrol

Fuel to oil ratio is 1:40

Cooling and water pump is fine

Not sure about an air leak

Jetting is 185
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline evo550

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2013 KTM 150 problems
« Reply #14 on: May 22, 2013, 12:05:19 AM »
What's the plug say ??
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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