WR450 No Spark

3 replies to this topic
  • he man

Posted January 16, 2015 - 06:22 PM


I tested my igniton  coil and the primary coil reads 00.4 ohms the limit in the book calls for .08 ohms, so this is quite a ways above.


Im not sure if this would cause a no spark situation or not ( im assuming it does since its the primary coil?). The secondary coil is within spec.


I checked for loose wires and even removed my ignition switch ( I previously mixed up the switches for the ignition and kill, but I don't think this does anything since it was the button that changed and not any wiring).


Any ideas before I try another coil? Im guessing the only way to is to buy one to find out if it solves the issue?

  • GuyGraham

Posted January 17, 2015 - 03:02 AM


More likely error in your meter

at very low resistance values, you need a real good quality meter to measure accurately


I fthe coil had failed, it would should open circuit (infinity)

0.4ohms is fine

The coil has not failed - your problem is elsewhere

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  • stevethe

Posted January 17, 2015 - 09:44 AM


You might also check for your spark at night. Sometimes it's very hard to see it in the day.

  • he man

Posted January 17, 2015 - 11:03 AM


youre right, I forgot to factor in the resistance of the multimeter.


I traced back the harness, turns out I plugged the wrong wire into the kickstand switch so I guess that was causing a no spark signal.


All fixed now!


Thanks again guys!


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