Engine wiring help

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Wilder

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I have a panterra 125cc vertical engine mounted on a kart. i have been working on this several weeks to bring it back to a running state. i am using a 6 pin cdi. 5 wires come out of the stator case, the only one i could successfully identify was the ac power(back and red) in attempting to find the pulse trigger for the cdi, out of frustration i eventually had to open the case and discovered that the pulse trigger has two wires that come out of the case, blue&white and green&white. i naturally assumed that one of these had to be grounded, however no combination of grounding/wiring to the cdi seems to work. all internals of the engine look beautiful so there is no indication of a failed pulse trigger. (analog)multimeter shows low resistance through both wires, and does not show ac voltage produced at any time through the cycle. is there some o0ther way to wire this, or some other ignition device needed?
 

OzFab

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Maybe these will help; if not, try this...



 

firemanjim

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Are you not getting a spark? Have you looked time see if it has a neutral safety switch? It would be above the pick up, and an inch to the right. It's on the outside of the case, if you have one. Have you tested all the components , in order of their use? Stator,then cdi,then coil.....? Do you know the proper way to test the coil and cdi?
EDIT one more dumb thing to check. Check the spark plug. Make sure the ceramic does not have a crack or chip in it. If it does, it will not work. (chip depends on size, severity. Cracked ceramic won't spark, ever..... ) I learned the hard way......
 

OzFab

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:iagree: These chinese engines have safety switches everywhere; make sure they're all engaged or the engine will not even turn over...

I used to have a checklist to isolate spark issues, I'll see if I can find a copy; in the majority of cases, loss of spark is a stator/magneto issue but, it could be CDI or coil too...
 

Wilder

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Are you not getting a spark? Have you looked time see if it has a neutral safety switch? It would be above the pick up, and an inch to the right. It's on the outside of the case, if you have one. Have you tested all the components , in order of their use? Stator,then cdi,then coil.....? Do you know the proper way to test the coil and cdi?
EDIT one more dumb thing to check. Check the spark plug. Make sure the ceramic does not have a crack or chip in it. If it does, it will not work. (chip depends on size, severity. Cracked ceramic won't spark, ever..... ) I learned the hard way......

I have been trying to push start it, as I don't have a kicker lever ATM

There is some sort of twisting switch with a black wire coming out of it and not connected to anything near the bottom of the case. The engine is on bare minimum wiring. If the pickup wire will pulse then everything will fall into place, there's just no pulse to trigger the cdi
 

Wilder

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:iagree: These chinese engines have safety switches everywhere; make sure they're all engaged or the engine will not even turn over...

I used to have a checklist to isolate spark issues, I'll see if I can find a copy; in the majority of cases, loss of spark is a stator/magneto issue but, it could be CDI or coil too...

The issue appears to be upstream of the cdi
 

firemanjim

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I have been trying to push start it, as I don't have a kicker lever ATM

There is some sort of twisting switch with a black wire coming out of it and not connected to anything near the bottom of the case. The engine is on bare minimum wiring. If the pickup wire will pulse then everything will fall into place, there's just no pulse to trigger the cdi

Show me a pic of that. Either it needs to be grounded, or not connected.... Depends on manufacturer..... With a Lifan, you can simply disconnect the neutral safety to bypass it....... LoL
Some times the pulse pick up goes bad. I have a good one running around here somewhere. If I can find it, I'd gladly send it to you free of charge. I'll look tomorrow after work. If I can find it, ill pm you..... :thumbsup:
 

Wilder

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Show me a pic of that. Either it needs to be grounded, or not connected.... Depends on manufacturer..... With a Lifan, you can simply disconnect the neutral safety to bypass it....... LoL
Some times the pulse pick up goes bad. I have a good one running around here somewhere. If I can find it, I'd gladly send it to you free of charge. I'll look tomorrow after work. If I can find it, ill pm you..... :thumbsup:

black circle to the left and slight up from the shifter shaft. seems like some sort of neutral detector. Thanks for all the help
 

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firemanjim

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black circle to the left and slight up from the shifter shaft. seems like some sort of neutral detector. Thanks for all the help

Yep, neutral safety switch. Since its not currently connected to anything, try grounding out that wire. Then try to start it..... Pop start the bike in second gear,more revolutions on the engine and better chance of getting going.....
 

Wilder

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Yep, neutral safety switch. Since its not currently connected to anything, try grounding out that wire. Then try to start it..... Pop start the bike in second gear,more revolutions on the engine and better chance of getting going.....

grounding the switch provided no change
 

firemanjim

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??? I'm thinking.... Might be a minute......
EDIT. When you test the stator, what are the readings you're getting, and off what wires?
 

Wilder

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??? I'm thinking.... Might be a minute......
EDIT. When you test the stator, what are the readings you're getting, and off what wires?

i have a basic analogue multimeter so i cannot accurately test resistance, however testing the black and red wire with one lead grounded results in high ac voltage throughout the crank cycle. with the two pickup wires, there does not seem to be any pulse generated at any time throughout the cycle

if the power supply wire(black and red presumably) is moved to the pickup wire lead on the cdi, the pulse light on the cdi flashes erratically,increasing as crank speed is increased.(indicates to me that the cdi is working) however when the black and red is in the power supply position to the cdi as it should be, no combination of wires in the pulse trigger slot can cause the cdi to fire
 

firemanjim

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I think my 200 uses the same wiring set up. I'll check it after work and send you some pics or something..... :thumbsup:
 

Wilder

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further testing leads me to believe that the issue is in fact the pulse trigger. Will crack the case tomorrow and take a look
 
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