****FIXED*PLEASE HELP :( 300cc** Linhai Scooter No spark.... By shanemac (Read 8,964 times)

[shanemac]

UPDATE: Just found something else that just don't look right.
So I made a little test light with a 12v bulb. With key ON, not cranking, the bulb lights up on both sides of the coil. One wire always to frame. On the hot side, the bulb immediately is super bright. On the trigger side, the bulb is dim and slowly gets brighter. Not as bright as the hot side. I did this with the coil connected. when i disconnect the wires I get nothing on the the trigger wire.
Had the same results on both CDI modules.

[shanemac]

If you cant help me out, let me know! Ill take it to a shop..........

[alleyoop]

Are you talking about the CDI TRIGGER WIRE and the HOTWIRE going to the CDI?
If so yes it would light up with the key on because that is a DC CDI and is fed 12V from the battery when the ignition is ON. The trigger you will always get a dim light BUT the trigger should be tested cranking the motor over not not running.

Also I noticed on that plug pic you put up some wires do not look like they are plugged in all the way just a thought.
Alleyoop

[JR]

Two things stick out here:

The kill switch on dash was also bypassed.

I rechecked the red and white trigger wire and I am getting some mixed results. At first, the voltage only showed AFTER I stopped cranking. Is that the norm? Got it up to about 2 volts.

Your CDI plug shows 4 wires and normally the CDI for the 250's has 5 wires? How was the kill switch bypassed?

No it's not the norm at all, the voltage coming from the pulse coil should be 0 volts unless the engine is being turned over. The pulse coil cannot make any voltage without movement of the flywheel. Also are you checking it by using the AC side of the multi-meter? By using DC you could get false readings.

You should get 12Vdc+ on the black wire with the key on and that's the only wire that feeds this CDI. It sounds like to me someone has tampered with the wiring, example: "kill switch has been bypassed"

Now this doesn't make sense either, why? The kill switch has nothing to do with the engine spark........unless it is in the engine kill position. If it is in the engine kill position then it has the CDI grounded out.

People seem to think that the 12Vdc from the ignition goes through the kill switch and when you put it in the off position you're cutting power to the CDI, not so even on the 250 scooters. If it is this way it will be the first of all the 250's I've seen done this way.

If I were you I would open the kill switch up and disconnect all wires to it and see if you have spark then. This is another thing I mentioned, only 4 wires (in your picture) to the CDI. It should have a black/white or gray/white wire going to it as the kill wire.

JR

[shanemac]

Thanks guys I REALLY appreciate the help! Spent most the morning going over ALL your old Linhai posts. The scooter is pretty much STRIPPED DOWN!
Looking for the plug under dash green/brown...............

I simply disconnected the kill switch on dash (2 years ago) and put switch back in. Something got me thinking this morning. Maybe the kill wire is grounding out somewhere in the harness?

As to the plug on the TCI/CDI, I backed the rubber plugs out so I could make sure the wires were pushed all the way into the cdi. Also probed there.

With key ON I get power on BOTH sides of the CONNECTED COIL. One dim, one bright. I even cranked the engine with test light connected (hoping it would explode from all that power) . It just dimmed a little on both sides.

Pulled stator case last night. All wires look GREAT. The rubber on original CDI is PERFECT! No burns/cracks what so ever. That is the first sign of a bad CDI.

Im gonna reread your previous replies and check everything again. Charged the battery again last night.

[shanemac]

My CDI only has 4 wires. Im trying to find out which is the kill wire. Cut the green wire....No the black wire joking

I have begun REMOVING every single china plug. They are JUNK and have poor connection. Replacing with butt connectors. Two of the three fuses up front were corroded from bad contact.

[shanemac]

What color wire is missing from the CDI?
Mine:
Green
yellow/black
red/white
Black

Im thinking there should be a Green/white for kill switch? I never removed and wires from CDI. The kill switch DID work prior to unplugging it.

EDIT: Looking for Black/white Grey/white wires.

I wanted to add. The scooter ran the way it is now (last year). I have not done anything new. Even the kill switch cut the engine out (before I unplugged it).
My kill switch wires (2) are green/white and green. There is a green wire on the CDI?

[shanemac]

WOOOOOOOOOOOHOOOOOOOOOOOO
I FOUND IT GOD DAMN MUTHERFKERSGDFDHF

It WAS IN THE DASH!!!!!!!!!!
Green and yellow wire! Lose as can freaking be.
Have'nt seen that much spark since the 4th of july.
Im taking some pics so you can share with other Linhai users!
It will probably solve 90% of the problems.

The new Cdi box you showed me did NOT work on my scooter. I guess its wired different. It was much smaller (half size). Not paying $40 to ship back to China....

Now putting it all back together should be fun.........

UPDATE: Just went for a 20 mile ride and she ran BETTER then when I first got it. That china butt connector was severly tarnished and soft. I imagine it was arcing in there. Im surprised the wires were not all melted. I still dont have a clue what those two wires went to.

[bones113]

Yahoo!. Glad you got it going. I had a similar problem on my Aeolus 300. It turned out to be a bad kickstand switch. Some times the solutions to these bikes problems are found by accident. Each time you learn a little bit more about your bike. Once the problems get ironed out you will find that these Chinese scoots can be dependable and most of all fun as all get out. I love my scoot. Now I don't worry about problems with it. I know it will fire up first try everyday and I can cruise with out worry. The Chinese bikes aren't the only bikes that have problems. The Japanese and Korean scoots have there share of problems as well. The internet has plenty of examples of that. I'm not saying that Chinese bikes are better but once you get things ironed out they are a great inexpensive way to have a BLAST!!!!!.


P.S.
Looking forward to your pics of the wire you referenced. It may be something worth learning to some of us.

[alleyoop]

Have to disagree with this:

Now this doesn't make sense either, why? The kill switch has nothing to do with the engine spark........unless it is in the engine kill position. If it is in the engine kill position then it has the CDI grounded out.


People seem to think that the 12Vdc from the ignition goes through the kill switch and when you put it in the off position you're cutting power to the CDI, not so even on the 250 scooters. If it is this way it will be the first of all the 250's I've seen done this way.


If I were you I would open the kill switch up and disconnect all wires to it and see if you have spark then. This is another thing I mentioned, only 4 wires (in your picture) to the CDI. It should have a black/white or gray/white wire going to it as the kill wire.

On some DC CDIs I have seen helping guys out with their 250s there IS NO KILL WIRE there is only 1 wire on the 2 plug side only the power wire. And on these I think the kill switch cuts the 12V going to the CDI and that is how it kills it same as if turning the KEY to OFF.


BUT YES BY ALL MEANS PICTURES of the NASTY BAD LOOSE WIRE MY MAN so we all can learn something.
Alleyoop

[JR]

Missed the one about TCI/CDI, different ball game and the kill wire if I remember correctly grounds out the coil, not the TCI, would have to look at the diagram again, it's also possible that it goes through a side stand switch and then back to the TCI.

We'll wait on the pics and then we can clarify things.

JR