Question about 2008 KTM 105 XC

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LOSE OF SPARK

I HAVE AN 07 KTM 85 SX,WHILE RIDING ONE DAY I LOST SPARK.THE CDI,COIL , KILL SWITCH,AND STATOR ARE NOT PHYSICALLY DAMAGED. TRIED A NEW PLUG TIGHTENENED AND RECONECTED EVERYTHING ITS ALL CLEAN W/ DIELECTRIC GREASE.I NEED TO KNOW THE CORRECT WIRES TO CHECK WITH AN OHM METER FOR EACH OF THESES WITH THE TOLERENCES .HENCE RED/WHITE 125-165 OHMS ETCETC.I DONT WANT TO PLAY A GUESSING GAME.

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  • Ken Mangione May 11, 2010

    I can refer you to a KTM dealer located in Jacksonville, florida. Shop name is Atlantic Moto Sports. Ask for Kirt. 904-247-1622

  • Rob Selvy
    Rob Selvy May 11, 2010

    Did your bike just die? or did it give you any misfiring before it quit? The ignitions are pretty sound these days and if you lost the low speed pulse coil you almost always get a erratic performance just before it quits. Have you bypassed the kill switch?I'm not trying to insult you because you sound very intelligent but the kill switch has caused more nightmares than I wish to discuss, on and off the track.

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  • 12 Answers

Pull the plug back out of the cylinder and ground it against one of the head bolts, kick the engine over to see if you are getting a spark.

Posted on Jan 05, 2009

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Posted on Jan 02, 2017

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1 Answer

KTM Lc4 640 2004 No spark fitted a new coil still no spark tested pulsar coil got 108 ohm's getting power to CDI tested blue and white wire to coil what els is there I can do


Hi, Anthony and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
3. 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.
4. Loose connection at ignition coil or plug between ignition sensor and CDI box.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose, check for spark leakage in the dark.
6. Faulty ignition coil, pick up coil, igniter, trigger coil or CDI box testing needs to be checked with an ohmmeter at 70 degrees Fahrenheit
7. Faulty safety switches clutch, kickstand, neutral, off/on etc.
8. Faulty ignition switch.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
http://www.ktmforums.com/forums/supermoto/2549-ktm-640-supermoto-spark-problem-please-help.html
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Nov 08, 2016 | KTM Motorcycles

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Have a 2011 50sx ktm no spark getting to plug ,plenty power out of maggy to coil have put new coil and lead ,new plug but still no spark with the kill switch unplugged


Hi, Chris and the usual suspects are:
1. Fouled spark plugs.
2. Severely discharged or a damaged battery, should have 12.5 volts or better and be able to pass a load test if necessary.
3. 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.
4. Loose connection at ignition coil or plug between ignition sensor and module.
5. Spark plug cables in bad condition, shorting / leaking, spark plug cable connections loose.
6. Faulty ignition coil or electronic control module or CDI box.
7. Faulty CKP, CMP, or BAS sensor.
8. Faulty ignition switch.
9. Tilt sensor needs a reset.
10. Security alarm failing to disarm needs reset
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
KTM 50 No Spark Mini Pe Wee
Dirt Rider Magazine
Motorcycle Message Board Motorcycle USA
http://www.ktm.com/globalassets/product-manuals-pim-data/dok_bike_bed_11_3211593_en_om__sen__aepi__v1.pdf
https://www.tradebit.com/filedetail.php/275115445-2009-ktm-motorcycle-50-sx50-sx-junior50

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1 Answer

2001 ktm 300 mxc not getting a spark what would cause not to get a spark


A few things,start simple disconnect the kill switch,remove the spark plug cap from the wire,check all your coneections from the stator to the cdi box to the coil.Still no spark your going to need a multi meter to check the stator and coil.If all this checks out to be good then it is your cdi box.A word of caution test these parts before replacing as they are not returnable and could get costly.A good shop could diagnose your problem in hour time.It may be money well spent if you do not understand your bikes ignition system.

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1 Answer

1991 ktm 250


Hi, Iain for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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Apr 10, 2017 | KTM MXC 250 Motorcycles

1 Answer

KTM 105 SX spark plug fails every ride???


Hi, Sagi nice novella and the usual suspects are:
1. Fuel mixture too rich or enrichner left out too long.
2. Faulty spark plug.
3. Incorrect spark plug for the engine type or service.
4. Piston rings badly worn or broken.
5. Valve guides are badly worn and/or seals worn, crushed or have come off the valve guide and are pumping oil through it.
6. Spark plug cable weak or leaking check for spark jump in the dark.
7. Faulty ignition coil.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
http://www.ktmforums.com/forums/two-strokes/1966-solution-fouling-spark-plugs.html
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Mar 11, 2017 | 2007 KTM SX 105

1 Answer

No spark


system not grounded

Jul 24, 2010 | 2005 KTM SX 525 Racing

1 Answer

I have no spark 2000 KTM 125 sx


Before going to the CDI system go ahead and check the kill switches including the side stand switch, with an Ohmmeter. How good is the battery? Check the fuses. Check the wiring harness. Are all wires clean and with a solid connection? Any abraded wires? Check the operation of the ignition switch with a volt ohmmeter. Is the bike in neutral and the neutral light is lit up?

You can download a free PDF factory service manual by going to the website below >
http://www.carlsalter.com/motorcycle-manuals.asp
The manual should tell you in detail how to test the CDI and other electrics.

Please rate this solution. Thanks. > 4 diamonds would be nice!

Apr 08, 2009 | 2000 KTM SX 125

2 Answers

07 KTM 85 SX LOSE OF SPARK


Did you do a compression check just for the sake of saying the motor did not seize? Have you checked by grounding the spark plug to make sure there is not spark? Your problem really sounds like a seizure. You may have lost the CDI box.

Dec 04, 2008 | 2008 KTM 105 XC

1 Answer

2005 ktm 450 sx die while riding.


yes, you are correct, those are the two pieces that could solve your problem, but i would go first for your cdi, you may choose to have it tested first also, before you jump out to buy a new one.

Nov 24, 2008 | 2005 KTM SX 450 racing

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