if you've done all that was posed here and still hard satrting pa rin car mo. try to check for vacume leak. isa rin cause ng hard starting yun and sometime its hard to accelerate at parang pupugak pugak pag may leak ang vacum ng car mo. try to check mga vacume hose, or try to check din yung distributor advancer mo baka may leak na rin at dun nag escape yung vacum.