No spark

[gs750dave]

Well i got all of the electrical kinks out and fixed the starter and thought id get it to run today. Well, i guessed wrong. When trying to start it it will just crank and crank but it wont even try to start. I did the spark plug test and i dont see any spark at all. Where should i look first?

[brveagle]

ignitor...

or coils... both can be tested... If you don't have any spark on all 4 plugs, it's probably the ignitor.

[BRycraft]

Ignition

If you dont have an electronic ignition then I would check the points and clean and or replace as necessary. If you have an electronic ignition then check the pick up coil resistance, my 82 850 specs is 290-360, not sure for yours, then check the primary coil resistance, should be around 4 ohms. Check for 12 volts a the primary leads of the coil, if you have 12 volts most likely the coils are bad which is rare both going unless something shorted them out.
Good Luck Bill

[Billy Ricks]

What year is your bike?