Hi, last time I couldn't start it so I thought to myself it would be a good idea to put some kleen-flo in it. I think it didn't changed much though. The only way I could start it was pushing it down a hill. The first time it only kept its fire for 3 seconds. Second time went good. Was reving really high but I didn't wait the motor to get warmed up. So I went up and down back and forth through the hill through 1st 2nd and third gear reving high. After that, I thought to myself well I got it unflooded so it's allright to turn it off. Then I started it back 1 minute later on first kick. Was reving good then left cylinder started to bog and the rpm dropped from 3500 to 2000 ( I have a guage ). I tried to give it some gas but went like beeerp beeeerp berp then stalled. Couldn't start it back again. Now today I put a new spark plug onto the left cylinder got it starting after 20 kicks was reving high like 4000 rpm then after 1 minute same thing happened... Note that yesterday when I decided to troubleshoot this, I checked if my spark plugs were actually making sparks. So I took a brand new spark plug and kicked the same spark plug on the 2 different wire plugs. On the right cylinder plug there was a more noticeable spark than on the left one. Same plug though. So does my coil is damaged? What's wrong? Please help me guys thanks a lot.