Question about 2008 KTM 450 EXC-R

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Complete loss of power while riding, no spark to spark plug. I have checked for wear spots on the wires, etc. 2006 KTM exc, low miles. Not sure what to do next. Coil , computer?

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The first thing you have to do is check the wire from the primary coil from the dynamo, (usually black color with stripes of any color wire )check it by means of starting the motorcycle and at the same time you will ground the said wire on the crankcase "on & off ",if you can notice a bluesh spark from it this means that the primary coil is good.
if you are sure that the primary coil is good but it has no spark on the sparkplug,thus,you can check any of following :
1. Check the ignition switch because it has the
risk of stuck up the connectors inside it.
2.. sparkplug may defective.
2. If sparkplug is good,check the CDI,it may need to
be replaced.
4. Check the ignition coil becos it moght be defective.
or.if your motorcycle is contact point operated,check the timing and set it on right place..and also get rid to the condenser because if it has leak and it will ground
then you can start the motorcycle..
goodluck.

Posted on Dec 10, 2009

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Posted on Jan 02, 2017

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Hi, Rob and the usual suspects are:
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4. Spark plug cables in bad condition and leaking check for spark leakage in the dark
5. Spark plug gap too close or too wide.
6. Faulty ignition coil, module, and or sensor.
7. Loose, dirty, or corroded ignition module connector at crankcase.
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9. Dirty air filter.
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Hope this helps.
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