Ashleydc

HI everyone, new to this forum. I have a issue with my 1990 Fzr 1000. It has a misfire, checked plugs, fuel filter, the bike has spark. Does anyone have a problem like this or had a problem like this and managed to fix it. The other day rode to work, bike was fine. Then 6 o clock rolls around, go to start bike, missing so took a slow ride home. Half way there I got irritated and opened the bike up, spluttering and missing and all of a sudden bike ran fine again. Next morning I start the bike it's fine, ride to work all good, time to leave, bike miss firing again. Now just a constant misfire. Any help will be appreciated. Ash