• GY6 No Spark Troubleshooting

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November 2019 Forum Retirement
Due to lack of extra personal time (and too much spam), I'm retiring the forum and setting it to a read-only state. No new registrations or posts will be accepted as of 11/09/19. However, all information will stay up and searchable. If you spend a few minutes searching, you'll find the answers you're looking for. We may re-open the forum next spring.
Have a technical problem? Ask here.
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 #12954  by Travis @ Buggy Depot
 Fri Nov 09, 2018 12:21 pm
Can you upload a picture of your machine? I'd like to confirm the model you have to know for sure what we're dealing with. Thanks.
milothemover wrote:
Mon Nov 05, 2018 3:14 pm
Vehicle model: ?? (Like "Yerf Dog Spiderbox")

Test Setup:
CDI Pin 4 grounded with a jumper? YES
CDI Pin 5 completely disconnected? YES

CDI Pin 1: .27 vAC
CDI Pin 2: .0 vAC
CDI Pin 6: 77 vAC

Symptoms:No spark.
Bought the whole kit:
Coil, cdi, plug, pickup
 #13066  by Jdkout
 Thu Jan 03, 2019 5:08 pm
I have 70vac from the stator, 0vac on trigger but i have 32vac at the coil and no spark, do i have a bad trigger or cdi?
 #13543  by hlhenry
 Sat May 11, 2019 9:55 pm
Vehicle model: yerf-dog 34800 rover 4x2 12 vDC
Test Setup:
CDI Pin 4 grounded with a jumper? YES?
CDI Pin 5 completely disconnected? YES?

CDI Pin 1: 0.30 vAC
CDI Pin 2: 0.033 vAC
CDI Pin 6: 0.00 vAC. 12.93 vDC
Ohms at coil wires off. 00.5

Symptoms: I installed a new 12 vDC CDI
I get the same readings with the old CDI
Could the new CDI be bad ? Or something else be going on any help would be great