Saving Terrilee's Chrissy! By JR (Read 1,139 times)

[JR]

Been seeing that fellow member Terrilee has been having a bad spell with Chrissy and sad to see her scooter not running.

Also from what I've read Terrilee is giving a real go at it but not having any luck so I thought I could put up a few pictures and some help that might get her on the right track.

First things first and that's the volt meter. I took the liberty of copying Terrilees meter and put some instructions on it as far as the leads and settings to use to test for voltage to the CDI from the stator.



Can be confusing but set the meter to 200VAC. Put the black common lead to ground and the best source for this is the negative terminal of the battery itself.

The red testing lead is the one used to check various points of what needs to be tested.

Now here is the 5 leads that come from the engine stator on the common GY-6 engine;



Take note the 3 plug is white, green and yellow, these go to the R/R and have nothing to do with the scooter's spark or firing system so we just make sure they are snugly plugged into the other end and move on.

Next you see two single bullet connector wires a blue/white and a red/black.

Blue/white = pulse sensor or pick up coil wire to CDI
Red/black = AC voltage to CDI

But when you look at your CDI it gets confusing sometimes for some people because the Chinese for whatever reason change colors on you!

So here is a picture of the two plugs that plug into the CDI;



You say What happened to the blue/white?

here's what we have;

Green = ground
Yellow/black = feed wire to spark plug coil
Black/white = engine kill wire to ignition/emergency engine kill switch

Now here's the other two;

Red/white = pulse sensor or pick up coil wire to CDI (IT PLUGS INTO THE BLUE/WHITE AT ENGINE!)

Black/red = AC voltage from engine stator, yes it plugs into RED/BLACK (yea I know the colors are the same but reversed)



So now that we have this out of the way lets test the stator voltage;

(1) set volt meter to the 200VAC range
(2) tie brake handle closed with rubber band or string
(3) turn on ignition key
(4) make sure emergency kill switch is in engine run position
(5) place black volt meter lead to battery negative
(6) place red volt meter lead on red/black on CDI
(7) turn engine over and take reading

For the stator AC voltage to be good enough for a scooter to run it should read from 50VAC to 100VAC, anything less than that is either a bad stator or bad connection.

I do say the bad connection because if I remember right you recently did a valve job and it's easy to knock wires loose when doing this kind of work happened to many a person. You need to make sure these bullet connector wire I mentioned are plugged in right and making a good connection.

Now the pulse sensor or pickup coil wire. If this is not functioning then the CDI doesn't get a message to fire so do all of the above EXCEPT put the red volt meter lead on the RED/WHITE wire and give her a spin.

This voltage is very small and the CDI can get a signal with as little as 0.5 volt and it will read only up to the 3 or 4 volt range at the most. The voltage reading will fluctuate a lot when testing this.

Also another thsng to check is all ground wire connections including the green wire to the CDI and coil, a poor ground can cause a lot of headaches.

Hope Terrilee doesn't give up and we can get Chrissy humming again and we're here to help.

JR

[Bong]

I sent her a message. I just hope she sees it. I do hope to learn from ya JR!!!

[terrilee]

JR
tyvm


i have posted this on other sites so im gonna post it here also
just not start a new thread


what can i say?
yesterday was a terrible day for me
really not making excuses but sometime u do

1st. that time { wink-wink ya know what i mean }

2nd. piggers cant pee, so im TOTALLY freaked by that
{ my poor lil boy} he's on meds, but hasnt pee'd yet
and i cant even ask my child whats wrong / hurts

3rd. my ongoing legal probs.

4th. the easy fix didnt work

5th u guys usually talk WAY over my head & i get so confused and frustrated. {im trying to understand & learn} BUT u guys rattle off
facts, this , that AND I didnt even know what settings to use on the damn VOM.

6th my learning disabilities. { yes i am mentally challenged} If someone shows me something, you usually {99.1%} NEVER have to show me it again, BUT words on a page and 1 MILLION wires
just,, wow to much. as i said i do have certain mental probs, but i can overcome them and have in the past. GEE i have a M.B.A., i have taken loser restaurants, and have turned them around and made then into multi-million $ stores. i have even turned a few into 3 star rests. and 1 into a 4 star Someone PM'ed me and re-told me about men & women , how men are wired for some things & women others.
this is one thing im not wired for ;D

7th but a lil of 5 &6. this stuff is 2nd hand to u, so u guys talk like i know WTF ur talking about--I DONT ;D
like i said-IF ( and i know this isnt going to happen) but if one person
could come here and show me--hell i'd be giving TECH advice to others in a few weeks.

i will ask a favor of anyone reading this.
please go to scooter professor JR posted a thread. and he wrote it so a dumb ass {me} can understand it.
please look it over and see if u would change anything.
BUT please dont add a ton of stuff, thats one of the bad things on these forums, 15 diff people say 15 diff things {almost the same but not} and us WOMEN get so confused
esp with the above mentioned probs

THANKS EVERYONE




the PIGGERS boy bear cat

Attachments:

[JR]

Terrilee it's my hopes to help you in any way I can and if you have any questions about what I posted above I'll answer them for sure.

If you can perform that test then get back with your results then let us know what you found and we can go from there. Don't give up and again we are here if you need anything.

JR

[terrilee]

i promise to
but everything is on the back burner for now

gotta keep a eye on piggers today ,constantly
if anything seems bad, he goes to the vet at 5

if i wait to long and have to go to the Emergency VET hospital, this weekend,
its like $1,200 to just walk in the door.
they do want ur card , as u fill out paperwork
so, being broke, i cant afford that.
so all day i'll just watch him

as much as i wanna get her running--my lil boy comes 1st!!!!
god i wish he would just take a big, long , good piss ;D
then i can relax a WHOLE lot, & maybe have the patience
to do this

again JR tyvm for posting the pics and writing so a dumbass can understand it,

Attachments:

[dudley]

Nice job jr.
I agree with terrilee. Sometimes the instructions given are way over my head as well.
But this one I GET!
I'm sure I'll be coming back to this one eventually.

Funny how pets and children always get sick just before the weekend.
Hang in there.
Gurgle, gurgle, gurgle.

[JR]

Feb 24, 2012 11:03:02 GMT -6 terrilee said:

i promise to
but everything is on the back burner for now

gotta keep a eye on piggers today ,constantly
if anything seems bad, he goes to the vet at 5

if i wait to long and have to go to the Emergency VET hospital, this weekend,
its like $1,200 to just walk in the door.
they do want ur card , as u fill out paperwork
so, being broke, i cant afford that.
so all day i'll just watch him

as much as i wanna get her running--my lil boy comes 1st!!!!
god i wish he would just take a big, long , good piss ;D
then i can relax a WHOLE lot, & maybe have the patience
to do this

again JR tyvm for posting the pics and writing so a dumbass can understand it,

You're welcome Terrilee. BTW not knowing how to do something doesn't make one dumb just not knowing.

IMO dumb is not giving it your best. When I see someone who is trying but like Dudley says it's over their head I try to just think of making it simple so it can be understodd better.

You hang in there and hope Piggers gets better soon.

JR

[terrilee]

well ok

jr

(6) place red volt meter lead on red/black on CDI

Read more: thescooterprofessor.proboards.com/index.cgi?board=chineseclassroom&action=post&thread=1057&page=1#ixzz1nPoDWbbU

ok u mean when its unplugged from the cdi correct,
so i did that. i only get a reading of less then 24

so i guess that means my stator is toast
correct?


so whats next step

[JR]

It's not a good sign for sure but lets check everything we can first befroe we start thinking about replacing the stator, would really suck to buy a stator and when you get ready to pull it apart fing a bad wire!

Now remember the two pictures above? on the engine you have two bullet connectors, one with black/red and the other blue/white. Make absolutely sure they are plugged in good and correct also.

Blue/white hooks up to red/white
black/red hooks into red/black.

Now here is another thing Terryilee the engine must be grounded and on most GY-6 engines on the fan cover bolts generally in the area of the oil fill cap you'll see a bolt with a most of the time black ground wire hooked to it that goes to the frame where the negative battery cable hooks up. Make sure this wire is tight and getting a good connection on the engine and whewre it hooks to the frame.

Also on the bullet connectors inspect them to make sure they are crimped well and getting a good connection, Chinese wiring is some to be desirted.

ONe last thing is where the wires come out of the engine there is generally a little rubber grommet that surrounds the wires and protects it from the mertal engine case, they have been known to wear through and ground out to the engine.

If all this doesn't turn up a problem and you still only have 24 VAC then yes you need a stator.

JR

[terrilee]

JRty

yesterday when doing that testing,
yes i checked all those wires
mine are just diff colors
ie the blue is not blue its white/red
no big deal its that color the whole way,
damn Chinese, musta ran outa blue

i am a lil confuzzled , abit, i cant 'member if there was 3 wires
to my ground point on the frame,
i always thought 2 but theres 3
1 from battery, from cdi & engine
but it has to be 3

lmsao


JR & ANY ONE ELSE READING AND HELPING
THANKS FOR PUTTING UP WITH ME

[JR]

Generally Terrilee on all of the GY-6 engines and scooters I've dealt with they run the grounds like this;

Black negative battery cable to the frame
green wire/s to the same spot on the frame bolted on with the black battrery cable
black wire to the engine and again bolted up to the same spot on the frame as battery cable.

I once had a fellow that was having a on and off spark problem along with the charging system not working and he had unhooked the ground wire to the engine and finally asked if it would make a difference and I simply said they put it on for a reason. Re-installed it and all was well.

JR

[terrilee]

JR

yea i know


just i got be fuzzled there for a couple

i just couldnt 'member how many lines went to that ground point
& it made me have to ask 2 or 3 ?

should get parts this week to take off flywheel
so maybe soon