TaoTao No Fire. Need Help from a Pro  By  chasedunfee (Read 10,887 times)

maybe the cdi is good , just not getting it's signal to fire the coil , from the pick up under the fan cover.

I got an extra cdi from this same symptom.
put a new cdi on it and it run temporarily, think I replace the stator and pick up wires under the fan cover.

Old cdi still on my bike , new ones still in the bubble wrap inside the tool box.

tvnacman

No I dont ACv or DCv, Unplugged or plugged to the CDI what does this mean. I saw earlier up when Alleyoop said to do it I was preoccupied with other things and forgot, but does this mean the problem isnt even in the traditional 4 spots of fire being the problem? Stator/CDI/Ignition/Spark?? I have been in the wrong system this whole time?

I got the reading by having the key in the on position there is no voltage AC or DC it read minute amounts but it could have just been me moving or something I have a pretty good meter its my gpas who works on arcade games

I've read through all of this and two things stand out 99& of 50cc and 150CC scooters DO NOT have a DC type CDI. Just because it may or may not have a kill wire in that position of any color doesn't automatically mean DC. Some scooters run the kill wire to the coil feed wire between the CDI and coil and you'll never see it unless you open up the harness.

Diagram of 6 and 8 coil outputs. The other thing that stands out is it is the standard wire color for a AC type CDI and unless he tells me he has 3 yellow wires going to the R/R from the stator and only one other wire that would be the pick up or pulse coil wire then it's not 3 phase.





Now forget measuring voltage from the CDI to the sparkplug coil, they are all different and measure all over the place, with a CDI it is either good or bad, you said you tested the coil on another scooter and it ran so it's not the coil.


Now take note of the wire placements on the CDI




So we have;

a good pulse signal voltage
a good AC CDI feed voltage
good coil

Only one more thing to check, has anyone mentioned kill switch in run position? Also if it does have a kill wire going to the coil wire feed it could be grounding/ed out?

Know this sounds dumb, but have you made sure the sparkplug is good? With a good AC type CDI if all is what he says it should run unless any of the other things are present? Also did you buy this scooter used and is it possible someone tampered with the wiring? Also does this scooter have a kick starter?

JR