Just so we're all on the same page here.
OMC refer to the windings that create power for the battery as Stator Windings. Let's say 14-15 Volts.
OMC refer to the windings that create power for the ignition as Charge Coils. Let's say a few hundred Volts.
Here's my take for what it's worth.
The magnets zipping around create an alternating magnetic field in the stator iron core which energize the Stator Windings & the Charge Coil.
Here's the rub, if you checked & understood the CDI website you would have seen the say to disconnect the rectifier as part of the testing for loss of spark.
Why would they say that if the Stator Windings & the Charge coil are electrically isolated?
Because they both use the same magnetism, a short circuit in the rectifier will 'quench' the magnetic field in the stator iron core and not leave enough magnetism to operate the Charge Coil. A short circuit or ground fault in the stator windings will have the same effect as a shorted rectifier.
Note: Being a V4 with only 1 powerpack I believe you only have 1 Charge Coil, V6s have 2.
Pay special attention to the terms Stator Windings & Charge Coil.
Help us to help you.
How did you test for spark?
Test your Stator Windings (Yellow wires) for resistance & ground faults. Depending on Model the resistance should be around 1 Ohm with NO ground faults.
Test your Charge Coil, (Should plug into powerpack) for resistance & ground faults. Check with CDI for values.
^^^^^ is the correct answer ^^^^^^^
timer base DOES NOT create the voltage to charge up the capacitors to throw at the COIL to throw at the plugs.
stator produces 150-400v, the capacitors holds the voltage, the timer base (producing something like 4 volts) tells the power pack which plug needs to receive volts...powerpack dumps the 150v+ volts to the coil, the coil is a step up transformer and produces something like 20,000 volts that goes to the plug.
to properly test the stator, you will need a multimeter, a DVA Adapter (from CDI electronics) that fits in your meter and a set of at least 5 jumper wires (also from CDI)..
a test for Stator Windings (yellow wires)...disconnect both wires from the terminal block...with a multimeter set for continuity , one lead on one yellow wire and other lead to ground..There should be NO continuity....the ohm test would be between yellow and yellow wire (these two tests don't need the DVA adapter or jumpers)
You'll be testing OHMs for both the Stator Windings and Charge Coils, and voltage using the DVA adapter
AC for testing the Charge Coil and DC for the Stator windings (the yellow wires to regulator).
if you can see the underside of the flywheel....check to see if the magnets are not boogered up or loose....they HAVE to be evenly spaced...
also check for melted goo (epoxy potting material from the windings) dripping down onto the block's top.
