pcnorm

I need help with 1991 FJ1200 Starts with choke and dies immediately in 30 to 60 seconds and TACHOMETER only moves about 50 to 100 RPM ,, NOT even 1000 RPM . been sitting for 3 years do to my bad health , now I am better . rebuilt HYD clutch and brakes because started leaking brake fluid . NEW battery . Pulled cards and tried to rebuild them after it would NOT stay running . REBUILD did NOT help . I was told if tachometer does not work then it has ELETC. problem but ,,,,,,, WHAT problem ?? Thank You