my fzr wont start unless started off on jump leads .then fires up 3 cylinders before clearing to 4. plug fouling is a prob but just seems to effect the same cylinder..also hesitate between 5-6 thou revs before going ballistic.ign or fuel?.any help would be welcome

if it needs jump leads then obvious one is bad battery or connections + earths need cleaning.

starting on 3 then going to 4 initially i would check mixture but would not overlook bad leads, test with a multimeter should tell you. Has it been stood for any length of time, carbs may need cleaning and retuning.

Hesitating could just be mixture or dirt in carbs, carb changes which jets it uses in relation to engine speed and 5-6 sounds like it could be one of those points.

Have a read of this see if it helps http://www.factorypro.com/tech_tuning_proc...pm_engines.html

hope it helps Dave C

THANKS DAVE C ILL CHECK COILLEADS IN MORNING.IF NOT THEN ITS OFF FOR SOMEONE ELSE TO SORT OUT THE CARBS CHEERS