i checked the spark plugs and they were old and dirty so i replaced them with the same brand and everything. Then i found this forum ordered 2 zener diodes first one lasted a month, hit a bump at about 25mph bike shut off. got it back to my house and replaced the diode again. this diode was good for about another month then died. Figured i should just buy a new lower ignition for 50 bucks to make sure the this aftermarket diode wasnt the problem. got the new lower ignition rode for about 30 mins last night then went to ride again this morning and got about a mile down the road hit another bump and lost spark again... any ideas? or did you guys have anything like this happend?

 

The BUMP is the key here - you have an electrical problem, possibly a dead short - Check for exposed live wires, even corroded earth wires.
That's where I'd start............

 

Alright thats what i was thinking too. do you think that means i will have to cut the wire harness to follow the wires? and i am really hoping that the ignition control isnt bad..

 

Alright when i get home thats what i am going to be doing, the problem is the wire is in the wire harness, how should i handle that and do you know where the grounds are on my bike thanks