Yamaha Sport ATV Forum

What would cause a CDI to pop

This is a discussion on What would cause a CDI to pop within the Yamaha YFM350 Raptor/Warrior ('87-Present) forums, part of the Performance /Technical category; I tried putting this in another thread but it wasn't getting any hits. I bought a 96 Warrior as a project. I was told it ...


Go Back   Yamaha ATV Forum > Performance /Technical > Yamaha YFM350 Raptor/Warrior ('87-Present)

Reply
 
LinkBack Thread Tools Display Modes
Old 04-13-2012, 12:54 PM   #1
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default What would cause a CDI to pop

I tried putting this in another thread but it wasn't getting any hits. I bought a 96 Warrior as a project. I was told it had a bad CDI. I went through the carb and got a new CDI. I hooked it all up and got to crank it over a few times. I then heard a buzzing sound like electronics burning up. I went to shut it off and before I could the CDI popped and cracked the insulating cover for the box. Now everything is totally dead. I am getting a new box but I don't want to fry the new one. I checked the stator and pickup and they all check good. I talked with RMstator and they said they had only seen this one other time but I know one of the members on this board had the exact same problem. I don't have enough posts to send a pm to see if he found out what caused his problem. Rmstator said to look at the harness I will look at it closer but I didn't see any obvious rubs on it. I don't want to start throwing parts at it and if I can't get it running I am just going to part it out. It would be a shame because the engine is in great shape. Thanks in advance for any help.
Seafarer12 is offline   Reply With Quote
Old 04-13-2012, 10:22 PM   #2
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default

Well I went out and looked at it a little bit this afternoon. I pulled all the wire wrap off the harness and didn't see any shorts but I will look it over closer another day. Does anyone know if there is a test for the voltage regulator and ignition coil. I ohmed the primary of the coil it had about 100 on it. I didn't check the secondary yet. Anyone have any ideas?
Seafarer12 is offline   Reply With Quote
Old 04-14-2012, 09:06 AM   #3
Member
 
Join Date: Sep 2010
Location: N. Ohio
Posts: 42
View 06vmax's Photo Gallery(0)
Default

I would think you have a problem somewhere in the wiring harness, but you said you already looked it over. Perhaps you should see how much voltage your battery is putting out? I think you can look at the manual and see where the power comes into the CDI, and make sure your getting 12v there as well. Also make sure your ground connections are tight and clean. If all else fails, I would replace the regulator/rectifier. Good luck. I'm having spark issues with mine right now :(
06vmax is offline   Reply With Quote
Old 04-14-2012, 03:38 PM   #4
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default

I am going to go over each wire and look for rubs. I have a new battery. I am just trying to think of what would pull enough amps to blow the cap or transistor in the box. I got a wiring diagram. There are only a few wires that would pull any amps that could hurt the CDI. I will keep plugging away at it. Thanks,
Seafarer12 is offline   Reply With Quote
Old 04-17-2012, 08:28 PM   #5
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default

150 views and only one comment?
Seafarer12 is offline   Reply With Quote
Old 04-17-2012, 11:44 PM   #6
Member
 
Join Date: Oct 2009
Location: Taylorville, IL
Posts: 99
View thapioneer's Photo Gallery(5)
Default

yeah shit some of the same problems here, mine the battery was taking a shit, so i was jump starting it, stator was charging at 13.8-14.2, i jumped it maybe 4-5 times. then went out oneday and it took like 10min of cranking before it started, was running fine i rode it for like 2 hrs then put it up, 2 days latter wont spark at all. im wanting a wire diagram for the stator, coil, cdi, and rectifier and what readings for what wires on each. i know from having blasters is that no spark is a bad stator/pulsar. my stator was keeping the bike running but dont know if having a bad battery and a spurattic voltage spike might have burned my cdi, also 99.9% of the time its not the coil. never heard any rectifier issues though
thapioneer is offline   Reply With Quote
Old 04-17-2012, 11:48 PM   #7
Member
 
Join Date: Oct 2009
Location: Taylorville, IL
Posts: 99
View thapioneer's Photo Gallery(5)
Default

i know sometimes its hard troubleshooting electronics, im a mobile electronics installer/automotive specialist, really it would be simple if you had a voltmeter and knew what wires to test and what readings you are looking for. but that would be to easy.
thapioneer is offline   Reply With Quote
Old 04-18-2012, 01:09 PM   #8
Junior Member
 
Join Date: Mar 2012
Posts: 13
View blev2922's Photo Gallery(0)
Default

bad regulator? check the regulator.
blev2922 is offline   Reply With Quote
Old 04-18-2012, 09:01 PM   #9
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default

I will check the rectifier. From the diagrams I have seen the CDI actually acts as the regulator. I could see that being a problem if I got the thing running but I never got it to fire off before the box crapped the bed. I talked to the company and they were going to look into returns of the boxes. I wish I could have broke into the CDI and see what blew. I am going to ask the the company to look at the box when they get it. It just has me stumped because most everything going to the CDI are just signals. There is not anything really carrying any amps. That and the box blew when I just had the ignition on, nothing else was going on. I got a manual on order so I will just have to go through every part. I am beginning to wonder if the box was faulty. The other member that had the same problem bought his box from the same people and it had the same date code stamped on it. I will just have to work it out.
Seafarer12 is offline   Reply With Quote
Old 04-26-2012, 11:49 AM   #10
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default

Just figured I would give an update. Got the blown cdi sent off to RMStator (never should have ordered something from Canada) I got the manual in. I just need to burn off the sheets I need and go test everything. Never did find anything in the harness.
Seafarer12 is offline   Reply With Quote
Old 04-27-2012, 11:36 AM   #11
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default

Went out last night with the manual and went through the steps. Only problem found was in the coil and cap. Nothing totally bad but resistance was out of spec. Have a new one on order.
Seafarer12 is offline   Reply With Quote
Old 05-13-2012, 12:48 AM   #12
Member
 
Join Date: Apr 2012
Posts: 36
View Seafarer12's Photo Gallery(0)
Default

Turned out to be a faulty CDI. I bought one from another vendor and it fired right up.
Seafarer12 is offline   Reply With Quote
Reply

Lower Navigation
Go Back   Yamaha ATV Forum > Performance /Technical > Yamaha YFM350 Raptor/Warrior ('87-Present)


Search tags for this page

05 yamaha 250/ coil keeps burning out

,

why is my yamaha rhino keep burning up the cdi box

,

bad rectifier cause blown cdi

,
why does cdi box burne out and pop
,
could high voltage on cdi box cause timing to advance?
,
what can cause a cdi to blow in a 4 wheeler
,
will voltage regulator cause you to lose power on an atv
,
will you get voltage at coil if cdi is bad raptor 350#gsc.tab
,
buring out a fl 250 cdi box
,
cdi pops on atv
,
what can burn a cdi box
,
how could i burn up a cdi box on my four wheeler
Click on a term to search our sites for related topics.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


» Discount Tire
Motosport.com

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 05:19 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.