i recently came across a 86 zx 900 ninja. i know that it runs but i want to check a few things before i spend a lot of money. i need to know how much compression this bike should have. i am also curious to know how many psi the fuel pump should be putting out. i have tried calling the dealers but it is kinda hard to find anything out on with it being so old. if anyone could help me out i would greatly apreciate it.