2000 xc500 will not start. Fogged it in spring, always starts within 5 pulls, now it won't start!! Gas is on and fresh, changed plugs, has spark, plugs not very wet though... will run with a little mist of gas in cylinders but will not pick up..i'm thinking fuel pump?? I know, it's February and it should have been running by now!!! Any support would help, thanks in advance!!