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Post by Jwhood on May 30, 2015 20:46:06 GMT -5
For some crazy reason I've always had issues getting a strong spark out of Tgb scoots!!!
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Post by Elektrey on May 30, 2015 20:48:02 GMT -5
its worked fine up until this point, I'll have to dig deeper if this new spark plug doesn't work.
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Post by Elektrey on May 31, 2015 15:56:40 GMT -5
Checked the battery out of curiosity: 12.43V so about 80% charge, its working fine.
I've had this thought though.
My spark plugs have always been colored differently on both sides. like half would be dark black and the other half brown (thats the part I tuned for).
Is this because of the exhaust allowing air in unevenly creating a leaner condition on one side of the plug? seems to make sense to me.
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Post by Elektrey on Jun 3, 2015 12:18:40 GMT -5
Spark plug came, no spark. Eventually battery didn't even have enough charge to turn the starter motor over anymore.
Going to buy a charger and get it back up to 100% first...
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Post by thatcrazyguy on Jun 3, 2015 12:45:42 GMT -5
Spark plug came, no spark. Eventually battery didn't even have enough charge to turn the starter motor over anymore. Going to buy a charger and get it back up to 100% first... Same thing happened with me  partsforscooters has one for 20$ |
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Post by iwiketuddlz on Jun 3, 2015 12:58:11 GMT -5
I'll bet the stator has fried or at least I had an awful time with stock stators failing left and right even brand new ones really a pain In the ass...
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Post by Elektrey on Jun 3, 2015 13:58:00 GMT -5
Why would the stator just randomly fry? The whole situation doesn't make sense.
Ran perfectly fine with exhaust leak.
Didn't run for a week, exhaust now fixed.
Took several minutes to start, once started ran OK, took it out for a 5 mile ride (little low on power I think).
When I came back I turned it off and tried to start again and haven't been able to since.
I bought a HF Float charger. It says to only use it with fully charged batteries. Mine is at 12.28V so like 60% charged. Is it ok to use the float to charge it?
Also do I need to take the battery out of the scooter or can I just attach the clips to the battery with the wires connected to the battery from the scooter?
Symptoms:
no visible spark.
engine turns over
I assume stator works because when I hold starter for like 3-4 seconds the front light starts to come on.
So what am I looking at then if it's not the battery acting up?
CDI and coil right?
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Post by 90GTVert on Jun 3, 2015 15:11:01 GMT -5
Why would the stator just randomly fry? That's what they do. Don't ask me to explain exactly what happens to CDIs and stators when they fail (because I can't lol). I can tell you though that they seem to fail out of the blue quite often. Sometimes you go to start a scooter that ran great and there's no spark. I've been riding down the road and had a scooter die and both the stator and CDI were bad. I've had CDIs do weird stuff like my tach displaying some wild RPM or none at all, sometimes the spark will get weak or act as if the timing is off. I bought a HF Float charger. It says to only use it with fully charged batteries. Mine is at 12.28V so like 60% charged. Is it ok to use the float to charge it? A charger that's only good for fully charged batteries? Also do I need to take the battery out of the scooter or can I just attach the clips to the battery with the wires connected to the battery from the scooter? You can just attach it to the batt while in the scoot. Symptoms: no visible spark. engine turns over I assume stator works because when I hold starter for like 3-4 seconds the front light starts to come on. So what am I looking at then if it's not the battery acting up? CDI and coil right? The stator can be bad with your lights trying to work. The pickup could not be delivering a signal or the charging coil for the ignition may not be putting out any power to the CDI. For the same reasons, just because your scooter runs it does not mean the part of the stator that charges your batt or powers the lights is operating as it should. I'm not sure on exact specs on a TGB, but at least for my Chinese scoots that are GY6/139QMB or Minarelli powered, I disconnect the wires from the pickup and the exciter coil. Put the red prob of a multimeter or volt meter into one of them. Attach the black probe to a good ground. Kick/crank the engine over. The pickup wire should show something like 0.5VAC. The exciter should be putting out 50VAC or more. Most of the time manuals give resistance specs to investigate. You can try that. I've had much better luck just doing what I described. |
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Post by Elektrey on Jun 3, 2015 15:22:07 GMT -5
Gonna attach the float charger and yeah thats what it says lol strange maybe a liability thing or something. So start out by checking out the stator then? I should be able to test those wires by plugging into the few wires that come out of the stator right? www.cobrasales.com/docs/TGB-R50X-Wiring-Diagram-20091118.pdfWould that be 5 and 6 for pickup and exciter? |
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Post by iwiketuddlz on Jun 3, 2015 15:53:44 GMT -5
Yup that sux man I hate it for you but good luck..hope you diagnose the problem...
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Post by Elektrey on Jun 3, 2015 16:13:36 GMT -5
took off the fan and could see inside the flywheel at the stator coils. 8 of them with 1 being the pickup. they look fine visually, not burnt or anything.
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Post by Jwhood on Jun 3, 2015 17:05:57 GMT -5
There are five wires coming out of stator side,black,blue w/yellow stripe,white w/ red stripe,dark green w/ red stripe, and another black if I'm not mistaken
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Post by Elektrey on Jun 3, 2015 17:11:37 GMT -5
Yeah 2 go to the rectifier to charge battery/power things 1 is ground and 2 are coil/spark wires the 2 that go to coil/cdi are blue w/yellow and black w/red Also read the manual for the charger it says don't use battery that aren't fully charged to 12V.  would have been helpful to put that on the front of the package. Was at 12.28v to begin so it's cool though. Currently at 12.75 volts and still charging. Also checked the plug and yeah it's completely clean so it never combusted anything whatsoever. Will keep updated once battery is fully charged. Will probably test voltage with those 2 coil wires. |
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Post by 90GTVert on Jun 3, 2015 18:32:19 GMT -5
5 & 6 on that diagram. Black/Red should be the wire to charge the CDI (50V) and Blue/Yellow should be from the pickup (0.5V).
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Post by Elektrey on Jun 3, 2015 18:38:06 GMT -5
exactly what I was thinking, thanks for confirmation!
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partsforscooters has one for 20$
would have been helpful to put that on the front of the package. Was at 12.28v to begin so it's cool though.