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30 miles on one cylinder

R

Rough Edge Racing

Tuned and Synch'ed
Joined
Jun 12, 2013
Messages
38
Location
Western NY
I rode out with a friend on his old Triumph to a gathering of European bikes about 60 miles away. My 1000 Guzzi cafe style bike misfired a few times on the way out but I paid no attention. When we pulled in the engine started to run on one cylinder. We left after a few hours and the engine ran fine for 10 minutes then started misfiring again and the last 30 miles the cylinder went dead
Yup,it's a Dyna 3 with Dyna coils. The ignition came with the bike when I bought it so it could be older. It appears a coil failed and that may have damaged the ECU.
The points are back in with car coils. It runs the same so the points will stay
 
It is unlikely the coil failure (if it is the coil) would have damaged the controller. Did you just replace everything or just try the coils first?
 
A shorted coil primary can take out whatever circuit controls the coil functioning.. The coil secondary was open....I did some testing and it appears the control box and or pick up is also faulty.
 
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