simple general question:can a very weak battery cause the bike to run rough even after it was jumped started??? thx JR

 

I think it depends on the bike, but I'd say yes...until the battery has received some decent amount of charge (by driving or a charger) it could yield some undesirable side effects.

 

I think same as previous, If charging from regulator not enough tokeep a good charge to batterie, the ignition may have some problem!!!!

 

Not if its electronically controlled and fuel injected. Its binary, it is on or off, it will run or it will not.