No spark # 4

[viking79]

'89 125 force .........just installed powerhead, I started the motor, it ran rough . I turned off the key & motor kept running. I choked it to shut it off. I noticed a ground wire on the no# 4 coil was not attached, I attached the ground wire to the powerhead now the key switch works but no spark on # 4 What did I burn up? I swaped the wires on the 3 & 4 coils & #4 coil is ok. I need help!!!!!!!!!!!! Thanks

 

[maxum247]

Re: No spark # 4

'89 125 force .........just installed powerhead, I started the motor, it ran rough . I turned off the key & motor kept running. I choked it to shut it off. I noticed a ground wire on the no# 4 coil was not attached, I attached the ground wire to the powerhead now the key switch works but no spark on # 4 What did I burn up? I swaped the wires on the 3 & 4 coils & #4 coil is ok. I need help!!!!!!!!!!!! Thanks

Here's some info I found!

No Fire Or Intermittent On One Cylinder:

Check stator and trigger resistance.
Trigger wire sets read approximately 50 ohms between the wire sets(DVA-5V or more), OEM stators read 700-900 ohms (DVA 180V or more) from blue to yellow, while CDI/Repair stators read 300-500 ohms. If readings are good, disconnect kill wire from one pack. If the dead cylinder starts firing, the problem is likely the blocking diode in the other pack. Good Luck!

max!