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Old 10-24-2018, 01:53 PM   #9
JerryHawk250   JerryHawk250 is offline
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Join Date: Oct 2016
Location: Houma, La.
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A few things to check are grounds and connectors to CDI, coil are good. A bad ground or loose connection can cause a weak spark which would explain the sputtering if you punch it. Too much fuel at one time and the spark is too weak to burn it. I had a loose pin on one of the connector to the CDI that caused the same issue. I also upgraded to a coil on plug and now have a much stronger spark.
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