Request for assistance - 750S with electronic ignition
Posted: Mon Apr 10, 2017 12:13 pm
Evening All,
So looking for some help with a 750 Sport fitted with electronic ignition.
Bike is a recent full restoration from a well known restoration shop, all new and shiny and less than 1500 km on the clock.
Electronic ignition is BC0500006 ELECTRONIC IGNITION 750 R/C Sachse Electronik, Germany.
No ignition problems so far.
I took the bike out on Sunday (well I tried).
About 1 mile to Petrol Station - engine dies as I pulled in - fuelled but could not restart.
Got bike home, no spark on either cylinder.
Looked at battery which had been on a trickle charger, low electrolyte.
Swapped for battery off another bike - healthy spark - bike fired and ran.
Went out, half a mile - bike stopped and refused to restart.
No spark on either cylinder.
Let bike go cold, first kick and it fired and ran. 3 or 4 minutes stationery then stopped.
No spark on either cylinder, would not restart.
So:
Battery now topped up and fully charged (and I had used a battery off another bike too - so battery OK methinks).
I know that electronics can be very sensitive to iffy batteries but whilst I know the battery I first went out with had low electrolyte levels, the battery I swapped it over to was fully topped up, healthy and had taken me out for a run the day before on a 900ss.
Connections to key switch look sound.
Earths sound.
Fuse box clean and polished, took fuses out and cleaned and replaced.
Changed plugs for new ones - no difference.
I think it is therefore something heat related in the electronic ignition but I am not familiar with what tests to do.
Any suggestions?
(I mean to get it fixed, not stuff like put the points back on etc thanks lol ).
Regards
Stuart
So looking for some help with a 750 Sport fitted with electronic ignition.
Bike is a recent full restoration from a well known restoration shop, all new and shiny and less than 1500 km on the clock.
Electronic ignition is BC0500006 ELECTRONIC IGNITION 750 R/C Sachse Electronik, Germany.
No ignition problems so far.
I took the bike out on Sunday (well I tried).
About 1 mile to Petrol Station - engine dies as I pulled in - fuelled but could not restart.
Got bike home, no spark on either cylinder.
Looked at battery which had been on a trickle charger, low electrolyte.
Swapped for battery off another bike - healthy spark - bike fired and ran.
Went out, half a mile - bike stopped and refused to restart.
No spark on either cylinder.
Let bike go cold, first kick and it fired and ran. 3 or 4 minutes stationery then stopped.
No spark on either cylinder, would not restart.
So:
Battery now topped up and fully charged (and I had used a battery off another bike too - so battery OK methinks).
I know that electronics can be very sensitive to iffy batteries but whilst I know the battery I first went out with had low electrolyte levels, the battery I swapped it over to was fully topped up, healthy and had taken me out for a run the day before on a 900ss.
Connections to key switch look sound.
Earths sound.
Fuse box clean and polished, took fuses out and cleaned and replaced.
Changed plugs for new ones - no difference.
I think it is therefore something heat related in the electronic ignition but I am not familiar with what tests to do.
Any suggestions?
(I mean to get it fixed, not stuff like put the points back on etc thanks lol ).
Regards
Stuart