this is an early optimax and ive had a zillion things go wrong with it, mostly electrical.however it runs great after about 6-10 starts and then warms up. on the hose it takes only two or three starts to run.things ive tried to remedy: new primer and hose,new water seperator/filter, new tps units,again. rebuilt low pressure fuel pump,had motor powertuned, tired different fuels. like i said once its warmed up it starts,idles and runs great. i used it like this for 3 seasons now and could live with it , but im thinking of selling.