Re: popin threw the carb
If it's a new engine check the valve lash. You may need to readjust the valves. You may have had a lifter that took a while to pump up and if it pumped up late you may have an intake valve hanging open. Also if you have an exhaust valve that is not opening will also cause it to pop through the carb. Thats were i would start after yu ch3eck your timing.
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