I have a 2000 Yamaha blaster and it won't start I bought it off someone said it needed a spark plug but sent me a video of it running so dumb me bought it put in a new spark plug got spark didn't start got a new carb didn't start cleaned all the wires won't start and the spark plug has spark I have no clue what's wrong with it now it has compression so now it's just pumping gas out the exhaust HELP!!!!