Question about 2003 KTM SX 250

2 Answers

2003 KTM 250 SX won't start. When you kick it, it starts to fire but never turns over. I accidently put the wrong gas in it. It takes 60:1 but I didn't put enough oil in it. It died while I was riding it. I drained the gas and put new in it. Changed the spark plug. Any ideas on how to get it to run?

Posted by on

  • yadayada
    yadayada Jun 03, 2010

    this needs a dealer to fix it.

×

2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Hi iv got a ktm 250 03 went out on it yestrerday was fine next moring startd it up was fine left it for few hours now it want start at all even tryd to bump it nothink. not even tryin to kick over..checkd the spark plug its abit black if you no what i mean but there is still a little spark there but still no good in startin bike..what if its flooded.plzz help new to all this thanks

Posted on May 13, 2012

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 440 Answers

Hi
If you have run the engine with too little oil then there is probably damage to the piston / rings & / or bore
Remove the exhaust to have a look

Ride Safe
Bike-Doc

Posted on Jun 04, 2010

  • Steve Johnson Jan 14, 2012

    A 03 KTM 250SX should not run with anything less that 50:1 oil mixture. I run 32:1 in my 02 250SX. In my opinion you should always be a little rich than lean. You may have burned up your piston.

×

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I've got a KTM 125sx 2002 I've done a top end rebuild piston etc and put a new coil and plug on it and the bike won't start with the kicker, only with a bump start took the plug out and its got a weak


Hi, Ian and the usual suspects are:
1. Fouled spark plugs.
2. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
3. Loose connection at ignition coil or plug between ignition sensor and module.
4. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
5. Faulty ignition coil or ignition / electronic module
6. Failed CKP, CMP, or BAS sensor.
7. Faulty ignition switch.
8. Security alarm failing to disarm needs reset
For more information about your issue and valuable free downloads that you will need please visit the websites below. Good luck and have a nice day.
125sx won kick start please help me KTM 2 Stroke
ktm 85 sx no spark
1999 2003 KTM 125 200 SX MXC EXC Service Manual Moto Data Project

Feb 23, 2016 | KTM Motorcycles

1 Answer

2008 ktm sxf 250 kick lever jammed


could be as simple as water in the fuel.
kick starter issue: need to remove side cover and inspect!

Jul 21, 2014 | 2008 KTM 250 SX-F

1 Answer

I have a ktm 250 sx 2-stroke. It has a new piston and new cylinder. bike ran great before it needed the repairs. Cranks on first kick. Run good but it leaks the pre-mix everytime i ride it and it won'


Where is it leaking from? If its leaking, that's more than likely why it doesn't run right, the fuel/air mixture is off. Also, I wouldn't continue to run it until the leak is fixed as it may damage the motor from not lubricating properly.

Aug 14, 2013 | Motorcycles

1 Answer

I have fire gas and compression but will not start. Even tried pushing it off what am I missing. Its a KTM 250


Hi Mikoneill18, how about ignition timing? for more information about your question please visit the website below. Good luck and have a nice day. manuals

Mar 04, 2012 | 2005 KTM 250 SX

2 Answers

I have a 2003 sx 250 KTM After rebuild every 10


check the barrel for any even wear.

Mar 15, 2010 | 2003 KTM SX 250

1 Answer

My 2003 sx 250 is fouling plugs at cold starts etc


Why 50:1?
All bikes should be 32:1, and then jet to match that.
Your oil is fine, and yes...go smaller on the pilot.

Dec 08, 2009 | 2003 KTM SX 250

1 Answer

Black plugs


Black Plugs are indicating that your bike is running too rich(too much fuel to air mixture) you need to have the carburator adjusted,more air.Good Luck.

Sep 09, 2009 | 2003 KTM SX 250

2 Answers

Oil


Correct me if I'm wrong but the 250SX is a 2 Stroke engine with a Gas (1.98 Gals Unleaded Premium 91 octane Recommended) to Oil Mixture (using Motorex Cross Power 2T at a 40:1 - 60:1 depends on oil quality) and when KTM says to Change the transmission oil the amount called for is 0.7 liters engine oil using Motorex Top Speed 4T 15W50. These Quanities are from an 04 250SX could not find a 2000. So consult with your local KTM Dealer's Service Department and pickup a Owners Manual at the same time it would be in your best interest. Liter breakdown 0.7 liters = 0.739681 quart (US liquid) OR 0 quart (US liquid) and 1.47936 pt (US Liquid) / 0.7 liters = 1.47936 pt (US Liquid) OR 1 pt (US Liquid) and 0.958726 cups (US)

Nov 10, 2008 | 2003 KTM SX 250

Not finding what you are looking for?
2003 KTM SX 250 Logo

541 people viewed this question

Ask a Question

Usually answered in minutes!

Top KTM Experts

yadayada
yadayada

Level 3 Expert

75051 Answers

Gino Cussen
Gino Cussen

Level 2 Expert

216 Answers

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers

Are you a KTM Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...