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Post by kingcricket on Jun 2, 2014 16:20:38 GMT -6
it is just weak/erratic always there but the grounds are good and I haven't swapped and wires around as far as where they go on the cdi.
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Post by kingcricket on Jun 2, 2014 15:56:00 GMT -6
primary value .5 ohms secondary 7.8k ohms on ignition coil, and all my testing on the output from cdi are with them unplugged from the coil
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Post by kingcricket on Jun 2, 2014 4:00:06 GMT -6
I have not checked it with ohms but i took a coil off a 230 suzuki and plugged it in and still had weak spark.
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Post by kingcricket on Jun 1, 2014 19:07:01 GMT -6
I tested it again but I unplugged the pick up coil wire and tested the output from the cdi0 which should be 0 and got 30, 20, 10 same. plugged it back in same. So would it be hard enough to believe that the pick up coil is bad and just bein plugged in is letting it complete the circuit with weak spark. cuz unplugged there's no spark but same reading from black/yellow
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Post by kingcricket on Jun 1, 2014 17:08:05 GMT -6
Even though everything with valve gap and what not is correct right now my main goal is to get the right spark, I even drained all the gas out since I knew it'd be sitting for a while. even looking at videos on youtube with people with good spark I would kill to have there weak spark, so much better than mine. I Talk to guys at work about it and there all lost as well.
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Post by kingcricket on Jun 1, 2014 16:37:56 GMT -6
I seen another thread on here while I was searching the web and saw a guy on this forum that was testing his with a new CDI that was putting 30v to nothing from CDI but never seen if he got it fixed or not thought maybe he had the same problem
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Post by kingcricket on Jun 1, 2014 16:36:14 GMT -6
they thought the petcock was bad cause the carb wasn't getting any gas but they didn't try to start it enough, so didn't even get the lines primed up enough to work right cause I get all kinds of gas.
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Post by kingcricket on Jun 1, 2014 16:34:22 GMT -6
no it does not run they parked in drained the gas out of it and parked on a covered porch under tarp then they went to start it and nothing, the battery was dead so he jumped It and it wouldn't start so they thought the petcock was bad. It sat for 3 years before I got to it and I checked the petcock which was working fine. CleaNED the carberator, checked valve everything ok. Tried cranking it not even a putt sprayed starter fluid in the carb-nothing. I asked her uncle if it had spark which he said yes so I checked it and it was at nighttime and you could barely see the spark so its definetly not enough to run. But I cut slots in the holes for the pickup coil and slid it down and am now getting a steady .2 ac volts from it. Constant 58v from stator, and have tested the wires at coil unplugged black/YELLOW tested once got 30 down to nothing. Waited a little tried again got 12 down to nothing waited a while longer got 30 again down to nothing. I fully agree with you about a faulty CDI because I can't see any other wires on there that would interfere with that I was thinking about the yellow because I've heard of scooters not running with as much as a bad tail light, which I checked all light bulbs are good. and plug gets soaked after cranking it a while just won't light.
Note all my testing of volts are with ac volts on multimeter
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Post by kingcricket on Jun 1, 2014 12:32:23 GMT -6
thanks for all your input by the way even checking other bikes you have. The killswitch isn't a factor I did pull the black/white wire outta the cdi and nothing changed. I saw a similar thing on youtube where a guy had a 200s Honda 3wheeler that had weak spark like mine and he said he ground the coil straight to the chassis ground and fixed the spark but i already did that. That was probably two weeks ago by the way before the new parts were bought
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Post by kingcricket on Jun 1, 2014 12:29:16 GMT -6
See that's what everything points to but I had one cdi that was brand new and had bought another one just in case the new one was faulty, that would mean the two old ones were bad and the two news ones are bad. It's frustrating and really hard for me to believe that all the cdi boxes hAVE tested bad. I tested it again and it did that but down to 0v I switched the multimeter to dcv and went up to 9 and down to 0 then back to acv and 30 down to 0. I don't know everything points to the cdi, there not expensive but I already bought two and how many more would I have to buy before I get a good one. That's why I'm thinking something must be grounding out and throwing the cdi off. think they're should be a way where i can just bypass all my extra switches and just run just with the grounds and power from stator to cdi to coil cause those are the main wires to make it run. If i was able to do that and get good spark I would know it might be like my power wire from the lights grounding out and messing with the cdi. I've been messing with this for better than a month.
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Post by kingcricket on Jun 1, 2014 8:53:30 GMT -6
and I tested the yellow/black wire unplugged from coil and while the motor turned over I got 19 15 12 10 9 5 2 then it stayed at .02vac.
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Post by kingcricket on Jun 1, 2014 8:19:34 GMT -6
thought maybe a handle bar switch might be bad I don't know if any of the headlights wires could ground out on the handlebar and enable bad spark. I don't know how I could by pass the lights for the power or if I could just disconnect the yellow wire from the stator that powers the lights I don't know if that would need to complete a circuit or not.
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Post by kingcricket on Jun 1, 2014 8:14:58 GMT -6
I agree and believe it is a ground but I've been all over the wires have checked and tested for ohms on all ground and making your if I touch bare spot in the frame I have .02 ohms on every green wire on the scooter. that's why I say its crazy I just can't find the problem.
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Post by kingcricket on May 31, 2014 19:45:10 GMT -6
didn't get a chance to check the scooter brother called about a spark problem with my nephews off brand Chinese 4wheeler. funny thing I wasn't getting any reading from his trigger coil either so we put the 4wheeler up on its side to get to wires easier and I unplugged the cdi box to check power from stator was getting 48 volts plugged it back in no spark no volts leaving the cdi to ignition coil. brother plugged In a plug for back tail lights that was unplugged and was trying to trace wires to make see where the plugs all went and checked it again just to see and had beautiful spark. unplugged the plug that he plugged in thinking it was the problem and it still ran, but I checked volts while it was running and was getting .02v at the ignition coil 70v at the stator and .01 volts at the trigger coil, but still running perfect they did about 10 laps around the yard parked it and it still started back up. But judging by the readings it shouldn't even run.
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Post by kingcricket on May 30, 2014 22:31:48 GMT -6
moving the trigger didn't give it more spark I was just seeing if I would get more volts out of that brand new trigger. I have tested it with 4 different cdi boxes two of them brand new. its dark out now so i'll test the yellow/black wire in the morning, that's the wire I was testing and getting nothing from but I never unplugged it from the coil. I can get a picture off the bike and numbers
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