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Post by smacky on Feb 23, 2016 18:27:08 GMT -5
Hi everyone I am a recent scooter fanatic and have recently acquired a couple scooter and have been working on them. One of the scooters I have is a 50cc and have been trying to figure out what is wrong and what needs to be fixed. I have learned that it isn't getting spark. the first thing I did to try and find the problem is I replaced the CDI. With the new CDI when I try and start it, it blows a fuse. not with the old cdi, but with new cdi. I have tried other CDIs and any new one blows the fuse. when the old cdi is on it will attempt to turn over but not blow a fuse... Any ideas on what the issue might be?
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Post by rcq92130 on Feb 23, 2016 18:37:47 GMT -5
Sounds like you are trying tyo use an AC CDI on a scooter wired for DC
Check with john (tvnacman) as he is the world expert on CDIs
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Post by steve on Feb 24, 2016 8:11:09 GMT -5
Is the old CDI a good bit larger than the new ones?
One way to tell is on the wiring harness. There is one side with a 4 wire plug, and a 2 wire plug beside it. Does the side with the 2 wire plug actually only have 1 wire on it? I'm talking about the wiring harness on your scooter.
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Post by smacky on Feb 25, 2016 16:11:46 GMT -5
Thank you for replying, and the new cdi looks exactly as the old one. Same size, same color and everything. the 2 wire connector does actually have 2 wires. any ideas?
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Post by tvnacman on Feb 26, 2016 18:30:20 GMT -5
How many fuses do you have?
What are the colors on the wires on the 2 wire plug?
From the hip im thinking you have an ac system.
John
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Post by scootscoot86 on Mar 13, 2016 7:38:35 GMT -5
I always take off manufactor cdi's and replace them with CDI NO REV LIMIT on my 150cc's
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