Hi !

I am having some ignition problems with my XJ900-83. Sometimes the spark disapears on 2 cylinders. It works most of the time so it is really difficult to fault trace. Does anyone have an electrical circuit diagram on this bike? It would be a good help.

Does anyone have any ideas what can be wrong with the ignition?

/Henrik

Sounds like coil problem, if your loosing spark on 2 cylinders it should be either the 2 outside or the 2 inside that you are loosing. With it being an occasional problem i would look to the connectors that connect the coils back to the wiring loom(should be under the tank).

Have a look at this see if its any good

http://zorch.maow.myip.org/bikes/wiring/xj900.jpg

Thanks alot Dave for the diagram and your idea!

I have been looking to the connectors and I think they are OK but I'll try to replace with new once and see if it works better.

Thanks alot!!

/Henrik