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1991 gsxr 750?

Bike runs well on tick over but cuts to two cylinders inside two not firing when you ride. Have fitted new plugs,coils,ht leads
andy, December 2009
does it have a spark on 2+3? 1+4 use a independant pick up and so do 2+3 also they have a coil shared between the two 1+4 on the same and 2+3 aswell.usually a problem like this is a sparking problem as if it was say 1+2 not running it could be anything.if you have already put new coils on it i would check the pick ups next they are on the right hand side i think on this model iside the crankcase cover.if you havent tried new coils firstly try to swap the coil for 1+4 for the other coil and also the Low tension leads and see if it runs on 2+3 and not 1+4 this will tell you straight away.i have a diploma from suzuki :)

adam bike doctor, December 2009
link Click here to see other fixes for Suzuki GSXR750.