ISO 2 stroke ignition guru

[ford4150]

Wiring diagram. Sorry it's not the best image. It's available on a Google search.
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[ford4150]

Originally Posted by ol'George

Just a guess here, is the movable point of the set inadvertently grounded? (chaffed wire or similar)
is the coil that makes power for the ignition system ok? (not shorted or open) so it is able to make power to operate the ignition system/high voltage coil.
From the pix, it looks like you have 2 lighting coils as well as a coil for ign system.
Those handlebar switches/controls are known for problems, as John suggested.
Thinking the switch interrupts the power generated for the ign system rather than use a "kill" wire to ground a "magneto"
do you have a wiring diagram to support your troubleshooting endeavor?
Never worked on that particular moped, but on similar small honda 60-90 CC engines, and that was how they worked
Edit:
John & I are thinking/posting about the same time, along the same lines AGAIN, HA,LOL

The movable contact on the point set is not grounded. Points closed there is 0.2 ohm resistance. Points open there is no continuity.
The coil checks out. The condenser builds a charge.
Yes, two lighting coils. The red wire and the yellow wires from the stator.
Thanks for the questions.

[J-Mech]

I'm sorry. I'm not thinking this through. I gave bad info. Let's start over.

First off, you don't "charge" a condenser. It just absorbs the voltage spike that occurs when the points break.

Points don't have power going to them (per se). They open and close the ground connection to charge the coil. I told you wrong on how to test them.

Questions:
How many wires running to the coil, what color, and where do the go? If I'm not mistaken, should be 2. One from the stator, and one that goes to the points. The condenser should also attach to the point wire.

This motor doesn't use a rectifier correct? Wire runs straight from the stator to the coil?

[J-Mech]

I'll be back at the pc soon. I'll look over those pics.....

[ford4150]

"Charging" a condenser.
This is the procedure I used to check out the condenser
I have the same DVM.
https://www.youtube.com/watch?v=FxD1OpPQaS0

[ford4150]

"Questions:
How many wires running to the coil, what color, and where do the go? If I'm not mistaken, should be 2. One from the stator, and one that goes to the points. The condenser should also attach to the point wire.

This motor doesn't use a rectifier correct? Wire runs straight from the stator to the coil?"

There is one wire on the coil, yellow in earlier photo.
4 wires from stator. red and yellow are for lighting, black connects to yellow coil wire, green is ground.
No rectifier in the wire from the stator to the coil. There is a rectifier/regulator in the lighting circuit to keep from over-voltage the 6V light bulbs.

Sorry, I don't know how to separate questions and answers as you do.

[J-Mech]

I've got to entertain some guests for a while. I'll be back later with some direction...... hopefully.

[twoton]

Originally Posted by ford4150

Sorry, I don't know how to separate questions and answers as you do.

Click the multi quote icon (its the one to the right of the quote icon at the bottom right of each post, I think (occasionally)) and then edit the quote and add your response.

[ford4150]

Thanks twoton!

[ford4150]

Originally Posted by J-Mech

I've got to entertain some guests for a while. I'll be back later with some direction...... hopefully.

I'm probably done for the night also.