Dc powered cdi question!! Help would be appreciated

Dcantk84 · 02-07-2019, 11:14 AM

Working on a Eton cxl 150
No spark condition
I Have 12.4 to dc cdi and the 12v switched is wired to the brake light switch circuit as oem route. I have 11.6 v because of voltage drop through the bulb (load)
Trigger pickup resistance - 141k ohms and .7 ac v
Exciter coil resistance - 331k ohms and 72 ac v

Do these dc cdis need exactly 12v or higher on switched circuit to fire?
Or am I missing something here?

humanbeing · 02-07-2019, 03:19 PM

That vehicle = An orphan from Taiwan. Thx to the similarities btw GY6 copies, we can find some parts in reasonable price.
Typical chinese dc-CDI works btw 8-16V & outputs around 200V
Don't u measured coil's primary / secondary ohm reading? Spark plug still in OK condition? ... https://get2itparts.com/etontech/PD_CXL150.php
AC reading (although seems OK this time) is useless. Build a Peak Voltage Adapter https://forum.jorsindo.com/forum.php...authorid=86716
GY6 should be something similar to: (don't need to measure Exciter coil when using DC-cdi)

Dcantk84 · 02-07-2019, 06:43 PM

Yes I am aware that this atv is an orphan haha. So both of my ignition coils primary resistance measures in spec and secondary measures in spec. I have multiple new spark plugs cr7hsa gapped per service manual spec. I dont have the exciter coil hooked up to anything but I can hot wire to an ac cdi and the bike will run but I was trying to maintain the stock setup with a dc cdi. If i test the coil positive wire coming from the cdi I should be getting somewhere around 200 ac volts?

Dcantk84 · 02-07-2019, 07:30 PM

I have 0.7 ac volts on trigger wire going into cdi
I have 0.52 ac volts going out to ignition coil.....
I have 2 identical vmc chinese dc cdis both are giving me the same output

Dcantk84 · 02-07-2019, 07:32 PM

obviously the cdi is the source of problem as I can verify I have 12 v constant , 12v switched and 2 grounds, followed by trigger at 0.7ac v but i have the coil positive at 0.52 ac v

Dcantk84 · 02-07-2019, 07:39 PM

removed 12 volt switched wire AT THE CDI left it connected everywhere else and cdi gives normal ac v output and bike runs

woohoo hope this helps someone in the future.

humanbeing · 02-07-2019, 08:28 PM

Buy 07HGJ-0020100 or equivalent | Homebrew: https://thumpertalk.com/forums/topic...ltage-adapter/
& measures it in dc.
The Taiwan url above shows big 4's shop manual picture, ALL measured in dc via peak voltage adapter

Dcantk84 · 02-07-2019, 09:07 PM

power probe 4 my friend... very good investment

humanbeing · 02-07-2019, 10:18 PM

https://otomodif97.wordpress.com/201...-kekuranganya/ had schematic of typical Hondaish 6-pin CDi

wheelbender6 · 02-07-2019, 10:33 PM

AC lies. DC dies. No. Wait a minute...

02-07-2019, 11:14 AM	#1
Dcantk84 Join Date: Feb 2019 Posts: 6	Dc powered cdi question!! Help would be appreciated Working on a Eton cxl 150 No spark condition I Have 12.4 to dc cdi and the 12v switched is wired to the brake light switch circuit as oem route. I have 11.6 v because of voltage drop through the bulb (load) Trigger pickup resistance - 141k ohms and .7 ac v Exciter coil resistance - 331k ohms and 72 ac v Do these dc cdis need exactly 12v or higher on switched circuit to fire? Or am I missing something here?
	0

02-07-2019, 03:19 PM	#2
humanbeing Join Date: Mar 2008 Posts: 2,436	That vehicle = An orphan from Taiwan. Thx to the similarities btw GY6 copies, we can find some parts in reasonable price. Typical chinese dc-CDI works btw 8-16V & outputs around 200V Don't u measured coil's primary / secondary ohm reading? Spark plug still in OK condition? ... https://get2itparts.com/etontech/PD_CXL150.php AC reading (although seems OK this time) is useless. Build a Peak Voltage Adapter https://forum.jorsindo.com/forum.php...authorid=86716 GY6 should be something similar to: (don't need to measure Exciter coil when using DC-cdi) __________________ Last edited by humanbeing; 02-07-2019 at 03:54 PM.
	1

02-07-2019, 08:28 PM	#7
humanbeing Join Date: Mar 2008 Posts: 2,436	Buy 07HGJ-0020100 or equivalent \| Homebrew: https://thumpertalk.com/forums/topic...ltage-adapter/ & measures it in dc. The Taiwan url above shows big 4's shop manual picture, ALL measured in dc via peak voltage adapter __________________
	0

02-07-2019, 10:18 PM	#9
humanbeing Join Date: Mar 2008 Posts: 2,436	https://otomodif97.wordpress.com/201...-kekuranganya/ had schematic of typical Hondaish 6-pin CDi __________________
	0

02-07-2019, 10:33 PM	#10
wheelbender6 Join Date: May 2015 Location: Houston area Posts: 1,902	AC lies. DC dies. No. Wait a minute... __________________ "Its not WHAT you ride; its THAT you ride"
	0

02-07-2019, 06:43 PM	#3
Dcantk84 Join Date: Feb 2019 Posts: 6	Yes I am aware that this atv is an orphan haha. So both of my ignition coils primary resistance measures in spec and secondary measures in spec. I have multiple new spark plugs cr7hsa gapped per service manual spec. I dont have the exciter coil hooked up to anything but I can hot wire to an ac cdi and the bike will run but I was trying to maintain the stock setup with a dc cdi. If i test the coil positive wire coming from the cdi I should be getting somewhere around 200 ac volts?
	0

02-07-2019, 07:30 PM	#4
Dcantk84 Join Date: Feb 2019 Posts: 6	I have 0.7 ac volts on trigger wire going into cdi I have 0.52 ac volts going out to ignition coil..... I have 2 identical vmc chinese dc cdis both are giving me the same output
	0

02-07-2019, 07:32 PM	#5
Dcantk84 Join Date: Feb 2019 Posts: 6	obviously the cdi is the source of problem as I can verify I have 12 v constant , 12v switched and 2 grounds, followed by trigger at 0.7ac v but i have the coil positive at 0.52 ac v
	0

02-07-2019, 07:39 PM	#6
Dcantk84 Join Date: Feb 2019 Posts: 6	removed 12 volt switched wire AT THE CDI left it connected everywhere else and cdi gives normal ac v output and bike runs woohoo hope this helps someone in the future.
	0

02-07-2019, 09:07 PM	#8
Dcantk84 Join Date: Feb 2019 Posts: 6	power probe 4 my friend... very good investment
	0