Misfire when opening throttle from tick over but goes when reaches 3k, ,carbs have been cleaned and balanced ,but wen i stripped the carbs i took the throttle sensor off instead of unclipping the plug,,could this be the problem? i have tried settng the resistance on the sensor but this seems to make no difference.gsf1200 bandit 97'

This is a timing issue. The crank and cam are out of time. It might be excessive wear,

No,check vro fuel pump diaphragm.if primer bulb doesn't get hard when priming is a sign of needle and seat not sealing or a hole in fuel pump diaphragm.

clean your intake.

check the carb (throttle) cable lengths.If they are different the mixture and idle settings will be meaningless.

check compressions 100psi or more on all cyls ! carbs balanced ? sparks on all cyls ? crank seals could be worn ! tick over 1000rpm then in gear 800rpm ish ! In water !

I would say you have a blocked or damaged jet. I would strip down the carburettor and replace any badly worn jets and clean thoroughly. When refitting the tick over mixture screw , screw it home and back out about 2 1/2 turns. That will be somewhere near it.
Hope that helps.

Ride the bike 20 or so miles on open road. Stop and remove plug to inspect. 'Are they black or white ?


Black =rich white=lean

your pilot jets are blocked.they need cleaned or replaced.they are a #35

Could be throttle bodys need synching,first adjust your TPS
(throttle position sensor)as per factory instructions.It will show you how to in a haynes manual.If the problem still persists,it will need throttle bodys synching.Its just like carb balancing on older bikes.they do run out as milage increases,its no major problem.

hi m8,, just a couple things,, wen u stripped the carbs down and cleaned them,, did u take the main jets and cold start jets,ie the jet that the needle in the carb sits in,, and poke the dirt out with a pin,, so u can see threw all the holes wen held to the light, u have a blockage still in the carbs,, undo bottoms of carbs take the main jet and the needle jet out ,,and clean ,, make sure your airbox is sealed down on the carbs and jubilee clips are tight,,,1 at a time pull off the spark plug cap and pull off the cap from its ht wire and snip a little bit off the end so u can see copper or brass stranded wire then screw cap back on ,do that to all 4 caps, do these checks ,the bike will run good, ,, look more in2 the carbs tho ,, its almost certain u have a bloked jet still