ronbuell My Rides (17) Posted September 30, 2019 I have a 2004 YZ250F that's not giving spark. Changed plug, changed coil, unplugged kill switch, still nothing. Checked values on wire harness for stator and pickup coil, all good. Is there any other test you guys perform to check the electrical system? Think I know where this is going......... Share this post Link to post Share on other sites
ChampWazza Posted October 1, 2019 Bugger....will one of your WR ECUs swap over, just to try what you already know ?? Share this post Link to post Share on other sites
ronbuell My Rides (17) Posted October 1, 2019 Unfortunately not, different connectors. YZ has single large plug on the ECU; WR has wires coming out with connectors on it. Further research showed I need to check the pickup coil spacing, so will do that. Found another ECU on eBay so went ahead and ordered that. Hope this takes care of it. 1 Share this post Link to post Share on other sites
