97 redhead 700 spark issue

JERSEYJOE

Member
Joined
Dec 6, 2005
Messages
474
Age
67
Location
TUG HILL NY
Trying to helps out a young local lad. 97 SX700. Has 125 compression, basics good, carbs clean, reeds good.

Has only spark to one cylinder. Someone replaced the coils but only 1 cylinder is firing.

CDI Box?
 

The 97-99 Red Heads spark all three coils at the same time so if only one is sparking check spark plug caps, coil wires, wiring to the coils, and proper coils installed. If all that checks out then its prob rusty flywheel and or defective stator.
 
x2 on rusty flywheel. fixed my brothers last year doing the same thing and his was the rust on the flywheel.
 


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