I have an X-19 Pocket Bike. When I turn the key to put the bike in accessory mode the temperature gauge goes 7/8ths of the way. Then after 2 minutes of riding its all the way on High.

I have a X-19 super pocket bike i have the 110cc engine in it. Im so mad its automatic but its the best condition body kit and and good running engine i could find. I have some extra money and i want to make it faster. What would you suggest to do first besides the air filter i already did to...