QuestionI have the Dayna S electric ignition and I had no spark in the front cylinder, So I changed the coils from front to the back to see if my coil was bad and I got the same thing, no spark in the front cylinder. I got a new electric ignition and still only got spark in the back cylinder. I got a New volt regulator and still only got the back cylinder. Do you have any idea's that would cause that. Also I have great compression on front cylinder.
AnswerHi Keith,
There are two kinds of Dyna S ignitions,
the single fire and the dual fire.
If you have two separate ignition coils yours
is likely the single fire system.
This system fires each plug separately
and the duel dyna fires the plugs simultaneously.
The single fire is the more efficient of the two
when working correctly.
The differences are in the single fire
having two pulse or pickup coils in the
ignition unit behind the "points plate"
The dual ignition unit has only one pulse
or pickup coil there.
The single fire can still fire one plug
even if one of the pulse units is faulty
or has a poor connection.
This would be where I would look for the problem.
Either the spark unit has only one good
pulsing coil or the wiring is incorrect
or has a break or bad connection.
Here is a link to a Dyna S wiring diagram,
hopefully it will work for you to check the
coil wiring.
http://www.dynaonline.com/english/instruct/DS6-2.pdf
Both coils need a 12 volt supply.
Check the wiring diagram and follow your
wires. Check for breaks or wrong connections.
Last resort is try another lower pulse coil
unit. You can also check the rotor or
trigger that passes by the coils, maybe
the air gap is too great on one coil
in relation to the trigger rotor.
Good luck!
Wayne S.
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