Possible CDI Issue

vincois · 06-17-2010, 10:28 PM

I have a 2008 LF200GY5. I am not getting spark and since parts are cheap I replaced the Coil, Spark Plug, CDI. the results were the same, no spark. I brought it over to a friends to day that is a tad more bike engine savvy then me. So this is what we found. From the engine the CDI is receiving 60V with the meter set on Auto for AC. From the CDI to the coil on the Black/yellow the meter reads in the mV. That dosen't seem right. We get the same readings with the original CDI and the "new" one. Any thoughts? If both CDI's are bad does anyone know of a jap made CDI that would fit the LF200GY5?

Weldangrind · 06-17-2010, 10:53 PM

Welcome!

I have nothing useful to contribute at this time. I just wanted to welcome you.

I'm hoping that one of the others with experience in this area will chime in.

Buzzkill · 06-18-2010, 12:25 AM

Could it be the magnetic pickup, on my bike under the flywheel cover on the left side of the motor it has a magnetic pickup sensor that reads a spot on the flywheel and it sends the signal to the CDI for the ignition.

SpudRider · 06-18-2010, 01:07 AM

Welcome to these forums.

You should be sending more voltage than mere millivolts from the CDI unit to the ignition coil. :( Check the wire leading from the CDI unit to the ignition coil for continuity, and resistance. If the wiring is good, I would suspect both CDI units are bad. I would also examine both CDI units for obvious defects, such as bulges, et cetera.

Spud

Wild_Alaskan · 06-18-2010, 01:17 AM

also make sure the coil is grounded properly, you also may have a bad switch which will keep the CDI grounded and not sending hardly any voltage to the coil

vincois · 06-18-2010, 08:30 AM

Thank you for the welcomes. I have been on here before but I guess i haven't posted in so long that it reset my posts. Or I am forgetful and never acyually posted.,, lol 8)

The coil only has 2 wires coming into it. So looking at the diagram the Green is the common ground?

@Buzzkill, is your bike a LF200GY5? Or does anyone else know if the LF's have that piece Buzzkill mentions? And if the LF has one would I still get 60V if that was malfunctioning?

does anyone know if you can test the CDI off the bike? Both CDI's look normal. no bulges or obvious defects.

FastDoc · 06-18-2010, 12:25 PM

You can't tell much by looking at the CDI's and I don't know if they can be tested. They ALWAYS fail and cause frustrating symptoms.

Sometimes Lifanoids have damaged wires behind the countershaft sprocket cover so I'd check that.

Welcome to the forum!

SpudRider · 06-18-2010, 02:41 PM

Quote:

Originally Posted by FastDoc

You can't tell much by looking at the CDI's and I don't know if they can be tested. They ALWAYS fail and cause frustrating symptoms.

Sometimes Lifanoids have damaged wires behind the countershaft sprocket cover so I'd check that.

Welcome to the forum!

Doc is correct; you can't tell much just by visually inspecting a CDI unit.

However, on rare occasions, the CDI unit will have a noticeable bulge that indicates the internal capacitor has ruptured; in these instances, you get a nice, visual clue.

Check all the wiring. If the wiring looks good, I still suspect the CDI units are bad.

Spud

Wild_Alaskan · 06-18-2010, 04:07 PM

i second checking behind the sprocket for wire damage

Buzzkill · 06-18-2010, 04:30 PM

The magnetic pickup is there, the wire by the front sprocket that often gets damaged leads right to the pickup sensor, I would drain the oil and pull both covers off the left side and give it a good looking over.

Thorgram · 06-18-2010, 05:17 PM

I found a CDI that matches my Lifan 200 GY5, but unfortunatley I haven't been able to test it yet with my motor in pieces on my garage floor. The plug and pins all match up and the specs seem to match. Here's the link if you are interested.

http://cgi.ebay.com/ebaymotors/RACIN...Q5fAccessories

It was dirt cheap so I hope it's not one of those, "You get what you pay for" deals.

SpudRider · 06-18-2010, 06:17 PM

Quote:

Originally Posted by Thorgram

I found a CDI that matches my Lifan 200 GY5, but unfortunatley I haven't been able to test it yet with my motor in pieces on my garage floor. The plug and pins all match up and the specs seem to match. Here's the link if you are interested.

http://cgi.ebay.com/ebaymotors/RACIN...Q5fAccessories

It was dirt cheap so I hope it's not one of those, "You get what you pay for" deals.

If the pins are wired properly, you will be fine. If this CDI unit works, get at least another one for a spare, and for future troubleshooting.

Spud

vincois · 06-18-2010, 10:51 PM

I bought another CDI from the local dealer. still nothing. knowing the workings of these motors is a tad above my tool grade. So I took the bike to the dealer to have them give it a go over. However, I am leaning towards what a few of you have said about the mag/sprocket area. the bike will not kick start and they verified no spark. I will keep ya posted.

vincois · 06-23-2010, 11:07 PM

It seems it was the stator. I saw it running today up at the dealer. They are checking the cable that runs the tach now. Since I am on my 2nd tach Lifan thinks it's the cable.

SpudRider · 06-24-2010, 01:49 AM

Quote:

Originally Posted by vincois

It seems it was the stator. I saw it running today up at the dealer. They are checking the cable that runs the tach now. Since I am on my 2nd tach Lifan thinks it's the cable.

The stators do go bad from time to time.

I replaced the stator on my Zong after 10,500 miles. The hot engine oil can damage the insulation on the stator wires, causing an electrical short.

Spud

06-17-2010, 10:28 PM	#1
vincois Join Date: Oct 2009 Posts: 6	Possible CDI Issue I have a 2008 LF200GY5. I am not getting spark and since parts are cheap I replaced the Coil, Spark Plug, CDI. the results were the same, no spark. I brought it over to a friends to day that is a tad more bike engine savvy then me. So this is what we found. From the engine the CDI is receiving 60V with the meter set on Auto for AC. From the CDI to the coil on the Black/yellow the meter reads in the mV. That dosen't seem right. We get the same readings with the original CDI and the "new" one. Any thoughts? If both CDI's are bad does anyone know of a jap made CDI that would fit the LF200GY5?
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06-17-2010, 10:53 PM	#2
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Welcome! I have nothing useful to contribute at this time. I just wanted to welcome you. I'm hoping that one of the others with experience in this area will chime in. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
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06-18-2010, 01:07 AM	#4
SpudRider Join Date: Jul 2008 Location: Idaho Posts: 25,054	Welcome to these forums. You should be sending more voltage than mere millivolts from the CDI unit to the ignition coil. :( Check the wire leading from the CDI unit to the ignition coil for continuity, and resistance. If the wiring is good, I would suspect both CDI units are bad. I would also examine both CDI units for obvious defects, such as bulges, et cetera. Spud __________________ Spud "Never argue with an idiot. He will drag you down to his level, and beat you with experience." Mark Twain 2015 Zongshen ZS250GY-3 (RX3) 2006 Zongshen ZS200GY-2 (Sierra 200) 2005 Honda XR650L 2004 Honda CRF250X 1998 Kawasaki KDX220 Mods made to my Zongshen ZS200GY-2: http://www.chinariders.net/showthread.php?t=6894
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06-18-2010, 01:17 AM	#5
Wild_Alaskan Join Date: Dec 2009 Location: Alaska Posts: 914	also make sure the coil is grounded properly, you also may have a bad switch which will keep the CDI grounded and not sending hardly any voltage to the coil __________________ Dune buggy build http://chinariders.net/modules.php?n...wtopic&t=14470 400cc lifan build vid: http://youtu.be/20HoU8OK_Y0 other fun: http://tinyurl.com/wildalaskan
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06-18-2010, 08:30 AM	#6
vincois Join Date: Oct 2009 Posts: 6	Thoughts Thank you for the welcomes. I have been on here before but I guess i haven't posted in so long that it reset my posts. Or I am forgetful and never acyually posted.,, lol 8) The coil only has 2 wires coming into it. So looking at the diagram the Green is the common ground? @Buzzkill, is your bike a LF200GY5? Or does anyone else know if the LF's have that piece Buzzkill mentions? And if the LF has one would I still get 60V if that was malfunctioning? does anyone know if you can test the CDI off the bike? Both CDI's look normal. no bulges or obvious defects.
	0

06-18-2010, 12:25 AM	#3
Buzzkill Join Date: Sep 2009 Posts: 53	Could it be the magnetic pickup, on my bike under the flywheel cover on the left side of the motor it has a magnetic pickup sensor that reads a spot on the flywheel and it sends the signal to the CDI for the ignition.
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06-18-2010, 12:25 PM	#7
FastDoc Join Date: Mar 2009 Location: Southeastern Washington desert Posts: 14,761	You can't tell much by looking at the CDI's and I don't know if they can be tested. They ALWAYS fail and cause frustrating symptoms. Sometimes Lifanoids have damaged wires behind the countershaft sprocket cover so I'd check that. Welcome to the forum! __________________ Happy to serve.
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06-18-2010, 04:07 PM	#9
Wild_Alaskan Join Date: Dec 2009 Location: Alaska Posts: 914	i second checking behind the sprocket for wire damage __________________ Dune buggy build http://chinariders.net/modules.php?n...wtopic&t=14470 400cc lifan build vid: http://youtu.be/20HoU8OK_Y0 other fun: http://tinyurl.com/wildalaskan
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06-18-2010, 04:30 PM	#10
Buzzkill Join Date: Sep 2009 Posts: 53	The magnetic pickup is there, the wire by the front sprocket that often gets damaged leads right to the pickup sensor, I would drain the oil and pull both covers off the left side and give it a good looking over.
	0

06-18-2010, 05:17 PM	#11
Thorgram Join Date: Jan 2008 Posts: 145	I found a CDI that matches my Lifan 200 GY5, but unfortunatley I haven't been able to test it yet with my motor in pieces on my garage floor. The plug and pins all match up and the specs seem to match. Here's the link if you are interested. http://cgi.ebay.com/ebaymotors/RACIN...Q5fAccessories It was dirt cheap so I hope it's not one of those, "You get what you pay for" deals.
	0

06-18-2010, 10:51 PM	#13
vincois Join Date: Oct 2009 Posts: 6	Ok.. I bought another CDI from the local dealer. still nothing. knowing the workings of these motors is a tad above my tool grade. So I took the bike to the dealer to have them give it a go over. However, I am leaning towards what a few of you have said about the mag/sprocket area. the bike will not kick start and they verified no spark. I will keep ya posted.
	0

06-23-2010, 11:07 PM	#14
vincois Join Date: Oct 2009 Posts: 6	Stator It seems it was the stator. I saw it running today up at the dealer. They are checking the cable that runs the tach now. Since I am on my 2nd tach Lifan thinks it's the cable.
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