yz400f no spark

2 replies to this topic
  • WR250R2017

Posted November 18, 2009 - 12:47 PM


my yz400 recently has had some sort of electrical problem thats been causing the spark plugs to short out and not spark ruining the plugs but now its not getting a spark at all even with a new plug. does anyone have an idea or what might be going on. is there ways to test the coil or stator or CDI?

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  • grayracer513

Posted November 18, 2009 - 02:00 PM


The manual lists the test procedures. Download one:


  • l_campionero

Posted November 18, 2009 - 02:07 PM


That's dang handy! I just downloaded one for my YZ250!

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