No voltage from stator By mjdwicinski (Read 2,101 times)

[mjdwicinski]

Well I'm new here so thanks in advance
For any and all info that you share with me. I have or was given a Lifan 150t-7 150cc gy6 motor 1P57QMJ. I've rode it many of miles. But here lately I've been able to ride then get somewhere and the scooter won't start. Battery being too low to turn it over. Kept on a 2amp battery tender here at home. Now I have a 8 pole stator which I've had to change several times in the past. Well I thought my stator was going bad so I put a new one on. Nothing. Order another one. Same thing. Nothing. But a new R/R. Same thing nothing. And yet another stator and flywheel. Same thing nothing. Bike runs and cranks fine here at the house cause of charger. But disconnecting the stator main plug. One plug 3 wires white,green and a yellow. Green is ground and the yellow and white should feed the r/r the regulate power for headlights and various things one scooter. Red wire of stator should be my battery charging of I remember right. I'm not the best with electronics but not a complete dummy either. I thought at least. So that's all good and well I know colors and what not. But I get absolutely no power from the yellow or white wires coming straight from stator. None 0 noda. There isn't anything else I know to do. Please help???

[Bashan]

Did you test the yellow and white by disconnecting each separately from the R/R? Then multi on AC with one probe in the wire and the other probe to ground? You have a red/black also off of the stator? What's the voltage on it? Do you have continuity between the white and yellow on the stator connector unplugged? ? Check your continuity on the WYG connector bike side from green to frame. Do the same on the WYG stator side.

[mjdwicinski]

No I have not disconnected the white and yellow directly from the r/r. I've just been testing directly at the stator plug. I have the two bullet connectors connected. That's all. Figured I would get voltage on the white and yellow right there instead of thru the harness at the r/r. Continuity you'll have to explain that one. I'm not the electrical genius. I'll be back with the bike in a few hours so I'll test it that way when I get back and post some results. Bike cranks and runs fine. So I have power to my cdi and trigger wire. Right?

[mjdwicinski]

Ok ran to house while on a parts run. Now with all wiring from stator hooked up and disconnecting plug at r/r I get nothing on the white or yellow and battery reading on red. Hooked back up to r/r I probed the wires white was 1.17 yellow was 0.51 and red was battery voltage. Red/black wire has 54.4 volts on it while running. Don't know about continuity. Could you explain please?

[tvnacman]

are you taking the voltage readings at the stator plug with the connector disconnected and reading the female side of the connector with the engine running .

continuity is the symbol of the omega , that is done with everything deenergized and engine not running . When the meter selector switch is on the omega the reading will be infinite , when you put the two meter leads together it should read "0" . the pulse coil should be about 145 ohms yellow /blue , the red/black about 450 . the yellow about 1 1.5 and about the same for for the white .

John

[mjdwicinski]

Checking voltage at female stator plug get no voltage

[tvnacman]

not to sound condescending , have you had any luck with continuity tests I explained what and how , also what they should be ? if your not getting any voltage from the stator then the stator is no good or the magneto has lost its magnetism ,if it did loose it magnetism then you would not be able to generate ignition voltage . Something is going on there !

John

[mjdwicinski]

Ok so if I'm reading this right. Ground the blck lead on my meter and probe the yellow and white wires right at the stator female plug?? If so I get nothing on the white and yellow. Red/black 2.1 blue/white 1.6.

[mjdwicinski]

Yes something is going on here and I'm lost. Just don't see how I can get spark and all that but absolutely nothing directly at the plug as far as voltage. Replaced 3 stators the last included a new magneto. Brand new r/r.

[tvnacman]

Can you post a picture of your meter so I can see what could be wrong .

John

[Alleyoop]

Are you setting the meter to VAC? How about the Flywheel any problems with that because that has the magnets.
Alleyoop

[mjdwicinski]

Apr 5, 2014 18:10:35 GMT -6 Alleyoop said:

Are you setting the meter to VAC? How about the Flywheel any problems with that because that has the magnets.
Alleyoop

Just put a brand new flywheel on it after buying 3 stators and a new regulator. Flywheel does whatever it needs to do for the ignition spark or whatever. But no voltage coming out going to regulator to be regulated and charge my battery. And yes I'm on VAC

[mjdwicinski]

Apr 5, 2014 18:06:50 GMT -6 tvnacman said:

Can you post a picture of your meter so I can see what could be wrong .

John

Tell me how to post a picture and I'll be more than happy to post pics of whatever we need to figure this out. I've fought this bike for weeks now before hitting the forum.

[Alleyoop]

I cannot believe all those stators and R/R are bad, the only thing I can think of is bad Grounds.
But here is how to post pictures. Also take a pic of the stator and the R/R.
Alleyoop

1. Click on this link:
tinypic.com/index.php

2. Click on Browse, that will link to your computer.
3. Find what you want to load.
3. Click on the name of the picture
4. Click on OPEN
5. Click on UPLOAD
6. Click on the LINK that starts with IMG.
7. RIGHT CLICK and CLICK on COPY
8. THEN Come here to your THREAD ON DOC.
9. RIGHT CLICK and CLICK ON PASTE.
Alleyoop

[Bashan]

Here comes Dr. Rude barreling in after being gone all day. Everything they have said is correct. Let me just add a few things. We do need some pics so hopefully you can get that organized. I'm agreeing with the ground at this point. That's why I wanted the red/black reading. If it was compromised that might have shown the way. C'est la vie.

This is the setting for continuity:

You will then need to hit select until you shuttle to where the top symbol is showing:

Touch the two probes of the meter together....you should hear a tone. That means a small current is passing from one probe to the other. Forget positive or negative or ground at this point. It is simply testing to see if it can pass a current between the probes. So when you put one probe at one end of a circuit, wire, engine case...anything....and the other probe at the other end of what you want to test, you should get a tone if there's an adequate connection between the two....like a good circuit. As John said...key OFF and bike not running. Put one probe on the white wire of the stator connector, one on the yellow, and you should get a tone. That means a small current is passing through the stator and back to the meter. If it doesn't, we have a problem. Go crazy...test everything!! You can't hurt anything. 8-|Record your results and tell us what you get. I do need the tests clearly reported that I mentioned before.