I am 17 and I don't have lots of money but I know my way around older 2 stroke dirtbikes but my grandpa gave me this four-wheeler and I have had nothing but issues with it. I went through gas tank/lines and the oil injection has been bypassed, I have mixed gas in the tank and it is for sure getting to the carb. I have cleaned the carb to the best of my ability. I can get it to try and start for a few seconds but won't run any longer than 5 seconds with or without ether. Please help