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Post by rich on Nov 29, 2015 11:47:32 GMT -5
I know this: the kill switch wire to CDI was grounding out on me, so I went to steering column, unplugged the kill switch and it tested fine, no grounding. But then checked the other plugs white and black wire going into rest of harness and it failed. So That tells me it's grounding somewhere between the switch and CDI right? And that will prevent CDI from firing to coil correct?
Im no electrician but my theory is, somewhere between the kill switch (which is good) and the CDI plug, there is an exposed wire that if left sitting, moves away from ground enough to crank, but after being cranked, the vibration is causing it to touch ground? Sound right?
If that's the case, then why would the scoot not start when I pulled that wire out of the plug to CDI?
Whats the correct way to bypass all switches. Permanently?
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Post by rich on Nov 29, 2015 11:34:45 GMT -5
Well, I went out just now and took off the front panels to expose the harnesses for switches and ignition to see if anything looked off. She cranked right up....then rough idled and shut off with no more spark again.... I literally hadn't changed ANYTHING. I did see a pinched harness going to left handbrake switch.   Opened the harness sleeve up to check wires but they weren't exposed to each other. Here's the big question I have: If the switches are operating correctly (ie no crank when toggled to off or no brake applied) then how can they be the cause of the CDI not getting spark? Or how could the kill switch also be giving me a grounded out beep when checking continuity? I'm beyond over this. |
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Post by rich on Nov 28, 2015 18:47:11 GMT -5
So wait, you're saying one of these female connectors on the left was "bad"   How the heck can that be? I replaced my stator today, got her sparked and cranked, drove down the road and back, parked her while idling and she shut off after rough idling and you guessed it...no more spark...now my female pin to kill switch is grounding out....I'm ready to set this thing on fire and roll it off a cliff...haha |
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Post by rich on Nov 28, 2015 17:28:00 GMT -5
Remove all of your switches, spray them with wd40 and work them a thousand times each. Get the run off clean. I would also check the harness for a rub spot on the frame. John I just bypassed the kill switch by removing wire #5 from plug to CDI and still nothing. I'm thinking about stripping the harness down completely and checking every inch of wire on the bike from ignition down to stator and all the way to spark plug boot. |
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Post by rich on Nov 28, 2015 16:38:41 GMT -5
Update: first thing I checked again with multimeter was if the kill switch was grounding out. Checked in the black/white wire terminal to CDI top left. It is grounding out now, but check out fine yesterday before I replaced the stator. Could I be getting too much current and causing components to fail?   |
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Post by rich on Nov 28, 2015 15:40:07 GMT -5
See if any of you guys have any ideas for me:
After replacing the spark plug, coil, cdi and eventually finding out the reason I wasn't getting spark was a burned terminal in plug to cdi, (I replaced the terminal and got it running again) But a week later the scoot wasn't getting spark again...
After determining the issue was now, the stator due to not getting the right ohm/voltage readings, I replaced that today and actually started getting spark! Drove it down the road and back to the house, park it and let it idle. It started idling roughly and eventually shut off. Tried restarting, but now I'm not getting spark to spark plug AGAIN. Rechecked ohms/voltage to stator and all checks out good, but still no spark to spark plug boot.
Am I missing something?
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Post by rich on Nov 24, 2015 20:30:29 GMT -5
rich - thanks and let me throw this at you as well. You said you weren't getting any ohm reading on your power wire - to me that doesn't automatically rule out a broken wire from the cdi connection to the stator itself. Right. Hoping a real pro can chime in and shed some light. New stator will be in soon here as well. If i Replace it and the scoot starts, then I guess its the last thing to always work. |
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Post by rich on Nov 24, 2015 9:36:40 GMT -5
I'm having the same issue. Have replaced cdi, coil, and sparkplug, ran fine and then nothing one night. No spark to the sparkplug boot. Checked out the dude in this video @ 10:28
I wasn't pulling any ohms from the red wire, so according to the guy in the video, my stator coil behind the flywheel is bad. Have you tested that wire? What ohm reading are you getting?
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Post by rich on Nov 23, 2015 22:17:38 GMT -5
Thanks! looks right! was there something I should have been searching for to come up with that result?
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Post by rich on Nov 23, 2015 17:53:51 GMT -5
So, after replacing the cdi, coil and sparkplug, then running for a few weeks, the scoot wouldn't crank on me the other night. Getting no spark to sparkplug boot... After determining my red wire going into stator coil wasn't pulling any ohms per this video: at 10:28 I'm looking to replace the stator. My plug coming from my stator looks like this:  But most of the stators on ebay on parts stores for any gy6 150cc, have plugs that are like this:  Anyone know which one I'm looking for? |
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Post by rich on Oct 11, 2015 18:58:32 GMT -5
Found these:  |
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Post by rich on Oct 11, 2015 16:47:43 GMT -5
Figured out why I'm not getting spark all the time. The female plug into the small side of CDI has burned lead connector on one side... the actual lead fitting is burned apart on the angled ramp that presses against the terminal on cdi  you can see the bottom right terminal is discolored from obvious shorting on cdi  My question is, how do I obtain just this plug and the lead fittings for replacement? That seems the obvious fix right? I already have a new cdi and coil on the way, but this connector will need to be replaced. |
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Post by rich on Oct 7, 2015 23:02:10 GMT -5
right again! thanks for the responses guys. bout time to order a new coil/plug and cdi set anyway. Thinking about going new stock though vs the ones you see labeled "performance". This scoot runs 75 mph on flat ground  |
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Post by rich on Oct 3, 2015 22:03:35 GMT -5
This may all be a complete coincidence, but the other day while riding, my scoot died down on me and wouldn't start back up. Got her home to check her out and realized a lead had come off the coil..put it back on and she started right up! Good right? Well, now she sputter and skips when accelerating. Very strange. She will still hit close to her top end of about 70mph during most of the ride, but she is definetely acting up. It's like every few seconds she tries to die and stall but decides to rev right back up and keep me going. It feels like I could literally ride across the country like this. I don't like it. She cranks and idles just fine, but the minute we get going down the road she starts up with this behavior. Could this be cdi or coil issue? Or perhaps I need to clean the carb?
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Post by rich on Sept 29, 2015 23:10:44 GMT -5
Well. Valves were way too tight. Set them both to .004, put all that PIA plastic back on and still.......nothing. Not even thinking about starting it seems. Even put the old petcock back on to see if she would at least give me a start after minutes and minutes of cranking. Let's see, what else can I spend more time/money on trying...cdi, carburetor, new scooter? ha
update: it was the carb...installed another one, took off all that emissions non sense and now she cranks right up and BLASTS down the road. almost too fast for this thing!
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