Motor ran for about 20 minutes before the ignition system failed. I have bought 3 Internal Combustion engines from you guys and two of them have had ignition system failures within a short time of purchase. That is a failure rate of 60%. The manufacturer REALLY needs to look at the ignition reliability issue with these engines! I want to purchase two (2) new ignition systems in the hope that one at least works, but there is no spare part listed on the website and Banggood will not supply me with the part number so that I can order replacements. It is all EXTREMELY frustrating!