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No spark
by: csmithjump - May 27, 2013 17:49:29 GMT -6
Post by csmithjump on May 27, 2013 17:49:29 GMT -6
This forum is awesome! I don't know if I can get back to the garage tonight, but if not I will post better photos and the color of the wires as soon as I can tomorrow.
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No spark
by: alleyoop - May 27, 2013 21:19:59 GMT -6
Post by alleyoop on May 27, 2013 21:19:59 GMT -6
 Alleyoop |
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No spark
by: csmithjump - May 28, 2013 10:10:37 GMT -6
Post by csmithjump on May 28, 2013 10:10:37 GMT -6
Alleyoop: I am going to get back to the garage at 5:30 CST and will try that. I will post the results.
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No spark
by: alleyoop - May 28, 2013 12:22:05 GMT -6
Post by alleyoop on May 28, 2013 12:22:05 GMT -6
Hope it is as simple as the KillSwitch is grounding out the CDI. If it still doesn't fire then just put the wire back on. Do not know if it was mentioned before but make sure the motor has a wire grounded to the frame. If for some reason the ground wire from the motor to the frame is bad or not making good contact the plug will not fire on the motor. It may fire on the frame due to the battery being grounded to the frame.
Just some easy checks before replaceing parts, the parts that can go bad for no spark are: PLUG, COIL, CDI, PICKUP COIL and STATOR.
Now just the Coil, it could be just a bad boot, Also since they screw onto the coil wire itself it could not be making good contact on the wire. Also on most the COIL itself also screws onto the wire then there are the wires connecting to the COIL they could be broken or burned or not making good contact.
Alleyoop
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No spark
by: csmithjump - May 28, 2013 16:29:12 GMT -6
Post by csmithjump on May 28, 2013 16:29:12 GMT -6
JR: the wires going to the CDI are black and black/white on the two prong and green, black/yellow and red white.
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No spark
by: csmithjump - May 28, 2013 16:32:28 GMT -6
Post by csmithjump on May 28, 2013 16:32:28 GMT -6
Alley: this is how the engine ground is hooked up, right to the neg terminal. I am disconnecting the wire on the CDI that you indicated next. Will let you know. Attachments:
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No spark
by: csmithjump - May 28, 2013 16:36:56 GMT -6
Post by csmithjump on May 28, 2013 16:36:56 GMT -6
Alley: just tried starting with that wire unplugged. No luck. Any suggestions at this point?
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No spark
by: tvnacman - May 28, 2013 17:20:52 GMT -6
Post by tvnacman on May 28, 2013 17:20:52 GMT -6
csmith , JR claims that the pulse voltage is good . Lets try something off the beat and path . Take a voltage reading while cranking the engine over . I think less than 11.5vdc to the dc cdi will give you a no start .
John
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No spark
by: csmithjump - May 28, 2013 17:31:47 GMT -6
Post by csmithjump on May 28, 2013 17:31:47 GMT -6
Update: the spark plug boot was bad. No connectivity. I just ran the the store and picked up a new boot. Now, oddly, when I take the plug out to test for spark I get a spark upon turning the ignition on but no spark while cranking.
John: the power into the CDI while cranking was 9.5 vdc.
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No spark
by: tvnacman - May 28, 2013 18:34:13 GMT -6
Post by tvnacman on May 28, 2013 18:34:13 GMT -6
get a booster pack on it , 9.5vdc is to low to power the cdi for spark . You could use jumper cables from a car DO NOT DO IT WHILE THE CAR IS RUNNING .
John
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No spark
by: csmithjump - May 28, 2013 18:39:28 GMT -6
Post by csmithjump on May 28, 2013 18:39:28 GMT -6
John: I will try hooking it up to my truck tomorrow with the engine off. My meter has the battery at over 12 vdc. What should it be at?
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No spark
by: tvnacman - May 28, 2013 19:00:10 GMT -6
Post by tvnacman on May 28, 2013 19:00:10 GMT -6
the little battery in the scooters 12.5 up too 13.1vdc
John
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No spark
by: csmithjump - May 28, 2013 19:10:39 GMT -6
Post by csmithjump on May 28, 2013 19:10:39 GMT -6
I will charge the battery overnight and see where I'm at tomorrow. Thanks for all your help.
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No spark
by: alleyoop - May 28, 2013 20:00:58 GMT -6
Post by alleyoop on May 28, 2013 20:00:58 GMT -6
Yes the BLACK/WHITE wire on the CDI is your killswitch wire. Great that part of the problem so far was a bad BOOT CAP. Yea tomorrow with a charged battery hope it sparks while cranking.
The ground wire from the motor to the frame look good. What I do not like is you got a spark when you turned on the KEY to On without cranking?? Someone had that problem before but I cannot remember what was causing that.
Test the black wire below the BLACK/WHITE wire you took off with the key on. If it registers 12v that means you have a DC CDI feed by the battery when the key is turned on. If it does not registers anything then it is a AC CDI and gets fed from the Stator as it turns.
Alleyoop
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No spark
by: JR - May 28, 2013 21:31:01 GMT -6
Post by JR on May 28, 2013 21:31:01 GMT -6
JR: the wires going to the CDI are black and black/white on the two prong and green, black/yellow and red white. Black = 12Vdc feed from key switch Black/white = engine kill wire Green = ground Black/yellow = CDI power feed to spark plug coil Red/white = pulse signal wire from stator. The scooter will not fire with less than 10.5Vdc. The one time fire when turning the key on is the CDI building up voltage from a low battery and when the key is turned on it has built up enough to discharge a one time spark. This system is point blank a DC powered CDI. Charge or get a new battery that holds 12.5Vdc or better. JR |
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..BAD TO THE BONE..
