Hello, purchased a used coleman at125ut that was not running. Replaced spark plug, and carb. The atv will crank and is really hard to get started. Whats concerning is smoke coming from spark plug hole when being cranked. Once running and its rare if it starts up smoke is still coming from spark plug. Any ideas on what it can be and why this atv does not want to start and run properly. I comfirmed fuel going to the carb and i know if have spark......

 

We have the information you seek on the ATV Connection homepage, here:

https://atvconnection.com/articles/a...he-spark-plug/