Can a bad voltage regulator burn out a cdi? By twoscooters (Read 3,456 times)

[twoscooters]

Hi. A little background, because I have worked on cars .trucks and heavy equipment my nephew came to me with his scooter problems.It was first to replace the throttle cable two times and then to remove the rear wheel to have the tire fixed.That wasn't to bad.Last fall it wouldn't run.That's when I started learning about stators,cdis,r/rs, and a bunch of other stuff.It got too cold to work on it ,so it sat in my yard for the winter. In the meantime my nephew bought a car and did not need the scooter any more so I bought it from him. So, the problem.I replaced the stator,the coil, the plug and the cdi and had it running.I checked the voltage at the battery and it was 15 volts at an idle. So I got a new voltage regulator. Now it won't run.The question is ,can the high voltage burn out the cdi or the coil? It's a '08 Baja SC50. Sorry if this has already been adressed but I didn't have much luck with the search. The little dog's name is Scooter.

[tvnacman]

If its an ac cdi no way , if it dc cdi it could .

John

[Bashan]

Swap out the old R/R and see if it will run with that one. Hi Scooter...WHO's a good boy...WHO's a good boy!? Rich

[Guitarman]

Aug 13, 2014 11:33:31 GMT -6 Bashan said:

Hi Scooter...WHO's a good boy...WHO's a good boy!? Rich

Careful there... Scooter's been trained to bite strange weirdos that hang in the mall just to trip old ladies so he can look good helping them up....

Get'em Scooter... Sic'em....

[twoscooters]

Thanks for the information.I will have to wait for the rain to stop and go out and try that.

[twoscooters]

I got it running. The starter was cranking slow, so I took it apart and oiled the rear bushing and cleaned the commutator. I put in the old r/r and it fired up.I put in the new r/r and it ran, but it was still putting out too many volts.So i put in the other new bigger r/r and the volts stayed around 14. Since was running pretty good I put in the old cdi And it ran, then I Tried the old coil and it ran. Put in the new stuff and it ran. Now it won't. Since it's not running I took a bunch of stuff off, the carb,the plastic cover around the cylinder,the tranny cover,etc.When I can I'll post a picture of what under the intake manifold.

[tvnacman]

Do not run the engine without the cylinder cover . I would think you have a loose connection sonewhere keeping it from running .

John

[twoscooters]

I've got things pulled apart ,so I have to order some gaskets and seals.I've got questions about the intake manifold gasket and spacer,so I will leave that for another thread.

[twoscooters]

I got it running.A wire pulled out of the little spade connectors.Right now I can't remember which one it is, but I crimped it on real good. I'll try to post a picture.     Picture didn't work.

[twoscooters]

I worked on the scooter today and found out what the connection I fixed is for. It is for the starter relay.I think this machine is possessed.Now whats up with the r/r?Dim headlight. With the new r/r low voltage to the headlight,with the old one bright light but over voltage at the battery.Voltage from the stator is good.These are the r/r I have .The silver one is the original,(maybe) the two black one are new.The big one controls the voltage but the headlight is dim.The two small ones don't control the voltage but the headlight is bright. Any ideas? the scooter is a 08 Baja SC50 if that helps.

[tvnacman]

You need to add some load to pull the voltage down . Get a voltage measurement for the lighting and charging . Let us know then we can go from there .

John

[twoscooters]

Checked the voltages on the stator wires with the new r/r,8 volts on the white, 6 volts on the yellow, and 5.6 volts at the bulb.I put in the old r/r and now have a bright light and about 14 volts at the battery with the engine revved up.I don't know if I should leave well enough alone or pull apart the wiring harness and check for bad connections.What do you think?

[tvnacman]

leave it alone

John

[twoscooters]

Thanks for your help.