I just bought a yz400f for $400. bike is mint but i cant get it started! the guy i bought it from didnt know anything about it and sold it for a friend. he knew it sat for a year. i couldnt get the bike to pop off when i looked at it but bought it because of how good of a deal it was. when i got it home i took the carb off, and cleaned the bowl and drained the gas. put it all back together and a splash of new gas, still wouldnt pop. i know to put the chooke on and dont touch the throttle. i also know it has low compression , and probably has a bent intake valve. im now trying to get the spark plug out. i took it all apart again, seat and tank off, top motor mount off but cant get to the plug. do i need a special tool to get to it? any suggetions? also even if it does have low compression i should still be able to get it to fire, am i right?