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2013 Massimo MSU 500 no spark

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Hi. I replaced my coil and the ecu on my 2013 Massimo msu 500 and still have no spark. It has been a great machine so far but now I  am at a total loss. 

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There should be a black kill wire that hooks to the coil, that grounds it when you turn the key off. 

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How did you confirm there is no spark? Did you hook up a spark test light?

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Well that's not a real great way to diagnose a spark.  There is an inexpensive tester that plugs inline and has a light.  You should use one of those instead.  That way the plug stays in the engine and has a chance to operate in normal conditions with respect to electrical ground and compression.  

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Also, you can troubleshoot the coil with a simple multimeter.  It will be right upstream of the spark plug.  Read the primary side and the secondary side (spark plug side is the secondary).  You will have a resistance value on each side.  If either side reads open or infinite, the problem is a burned out coil.  

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Thirdly, you can read the spark plug wire with the same multimeter.  You're basically going to troubleshoot the system from the spark plug back up the system in order, once you verify for certain you have no spark.  

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Nate sir. I  relaced the coil with a new one so I  know it not that. I have checked for spark that way for many years. It may not be the best but it does work. I also replaced the ecu with a new one so i know the problem lies elsewhere.  Just trying to figure hete to start next.

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Well then it could be the plug wire, fuse, wire issue, or crank/cam position sensor issue.  If you're not getting a position signal from the sensor, you won't get a spark

  

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