Quantcast
Jump to content

  • Join Today, It's Simple and FREE!

    As a member, you can post in our forums, upload your photos and videos, use and contribute to our downloads, create your own member page, add your ATV events, and even start your own ATV club to host your own club forum and gallery.  Registration is fast and you can even login with social network accounts to sync your profiles and content.

Jeff Comstock

Testing help for coil on 99 bayou 300

Recommended Posts



That does. It mean it’s not sending a signal.  If it ohms within spec it’s most likely ok. 
have you tested your secondary ignition coils as well as the regulator ?

Share this post


Link to post
Share on other sites

Yep new regulator and coil will fire all day on my buddies 300. Put it on last time I was working on it and let it run for 45 minutes or so to see if when the coil got hot it would mess up, it didn't. Ran fine.

Share this post


Link to post
Share on other sites

Ok well so I guess it’s a new pick up coil but I don’t think you can get them separately? 
If that’s the case then maybe order a whole new set up stator and all. I’ve been lucky with caltrec so far so maybe you got a defective one ?  
So if your sure that everything else tested ok including the cdi which you can only test by putting on another bike and it’s good then you have to go with your gut on this.   

Share this post


Link to post
Share on other sites

I've tested and retested everything from the wiring harness (3 times, OMG what a time consuming pain), put every part except stator and pulse coil on my buddies running 300 so it's either Gremlins or the pick-up coil. Almost worth the oil and gaskets to try that.So can a stator be putting out power yet not activate the pick-up coil? Is that possible? If it's wierd it'll happen to me, true story.

Edited by Jeff Comstock
Added text

Share this post


Link to post
Share on other sites


Sure it’s possible, one generates power the other sends a signal to the cdi. Two different parts. I’ve seen pick up coils work until they heat up and then fail.  

Share this post


Link to post
Share on other sites

No what meant was could the magnet on the stator that actually trips the pick-up coil be bad and yet the stator still generate power? I've heard the magnets can get weak if overheated or hit with something?

Share this post


Link to post
Share on other sites

I don’t think so. I’ve seen magnets come off that’s about it.   When you have the tester on ohms/continuity and connected to the pick up coil wires did you spin the flywheel slowly past the magnet and see what he tester does ? 

Share this post


Link to post
Share on other sites


Disconnect the pick up coil and connect it to the tester and pass the magnet by it slowly and see if it triggers the tester.  

Share this post


Link to post
Share on other sites

Sorry took so long to get back, between work and hunting for deer I been tied up. So on 20 volts my meter gets wild swings, from 0.00 to 0.06. if i turn it back instead of going all the way around again i get minus 0.01 then when I go past the pick up I get -0.03.  Thinking that's not normal, only got 0.05 at 20 volts once in bout 45 revolutions going slow as molasses by hand

Share this post


Link to post
Share on other sites

So it could be a bad pick up coil if the numbers aren’t good. But without the flywheel spinning and the magnet not near the pick up coil do you get an ohms reading on the two wires ? 

Share this post


Link to post
Share on other sites


Yeah it ohms as good with the magnet on the far side away from the coil but again I get crazy readings when I turn it over, from -0.02 to 6.85 ohms at 20k

Share this post


Link to post
Share on other sites

I wouldn’t focus on the irregularities of the spinning readings. The coil is supposed to be tested while it’s not spinning and away from the magnet. It has to be on ohms and you should get pretty much the same number every time you test it. 
If it’s within spec it’s good. Then the same tests should be done on each phase of the stator coil wires. Between phases (wires) and then from each phase to ground for continuity.   If all that comes back good then it’s something else.  
 

Share this post


Link to post
Share on other sites

Ok, first things first... Happy Thanksgiving everyone and thanks for all the help and support. So, now down to the nitty gritty, found the problem, baby girl is running like brand new. 

The crazy readings I was getting from the pulse coil had the answer. When I bought the new stator and pulse coil from caltric I was really hoping I would be able to fix it, it WAS the coil. Somehow the blue wire got pinched almost in two where the wires go into the motor, just above the rubber gasket. Never would have seen it but for the deciding to chance the stator was bad. 

Wish I knew how to do video thingamabob on here I'd show y'all how sweet she runs

  • Like 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Similar Topics

    • By Dwight Williams
      Hey everyone, I've been scratching my head over this for most of the day.  I bought a couple of Bayou 220's, got them running (they've both been sitting), and started tweaking and fixing small things.  One of them is mostly done, the other had an aftermarket carb on it and I've been trying to sort that out.
       
      Anyway, while adjusting the carb it died a few times, I restarted and moved on until it died and wouldn't restart.  I figured maybe I'd flooded it or something - after further attempts I realized I had no spark.  Since I have two identical machines I have many parts at my disposal.  I've swapped the CDI, spark plug and coil with no luck.  I have good resistance readings from the stator and pick up (135 and 110 respectively),  I don't have a peak voltage meter but I measure around 53VAC on the stator when cranking.  I have a 4 wire stator, not an alternator like the newer ones.  Grounds look good, I've checked the kill switch by verifying that it and the ignition switch grounds the black/yellow wire to the CDI.  I can turn the engine slowly and see the pickup short the meter as well, seems normal right?  So far everything I've checked looks the same on both machines.  I've got the service manual and wiring diagrams.  Do these readings make any sense?  I'm obviously missing something but I'm stumped.  thanks!
    • By Daniel Gibson
      Have a 08 raptor brought to me a couple months ago. Got it on a trade for house remodel. Bike has around 30 hours. No that's not a typo thirty verifiable hours. The main Yamaha tech has put hands on this bike. Always Been reallyhard to start. If it does it runs really good. That's the kicker...IF! It started out intermittent now it's no spark at all. Everything ignition related is brand new. It all checks out good but still won't do it. Please help
       
    • By Chris2018
      I have a 1996 Kawasaki Mojave KSF250. I have no manual on it and it has a no spark issue. If anyone could give me a hand with this or would possibly have a manual would appreciate it. 
    • By orvilleortiz538
      I have a 110cc Chinese atv,the harness is in good shape,I recently bought a new stator,coil,CDI,spark plug,came as a kit from Ebay,and I still have no spark,I've watched a few videos from YouTube tried the same steps,but still no spark.... ???? Bad Flywheel??? I heard is very rare for them to go bad,(the magnets in them) I'm gonna check the harness very good again!!! I just can't get spark!!! Any suggestions Please!!!!
    • By quadtech62
      I have a 02 Warrior i am trying to build a wiring harness i have looked in the manual and  i am confused... the pick up has 2 wires.  W/R W/G The source rotation coil has 2 wires. One is Red other is white/blue. The manual shows the  the white and blue wire connected to the w/g  right after the stator... so why is these 2 wires connected?  Does not show w/b wire at cdi 
      i have looked at many options with no luck if someone has a 2002-2004 warrior and can take a pic of the wires and location at cdi i would really appreciate it. Thanks
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...