Quantcast
Jump to content

  • Do you own an ATV? Join our Forum!

    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.

RevNate

2004 Yamaha Warrior 350 No Spark

Recommended Posts

Trying to help a friend with his 2004 Yamaha warrior 350... It wasn’t getting a spark so we replaced the spark plug, cdi box and coil. Have tested the kill switch, checked fuse,  everything is good there. Monday (8-20-18) we installed a new stator and got spark, ran it around my trails for about half hour then put it up. Today (8-25-18) we went to go riding and it wouldn’t start, again getting no spark... can’t wrap our heads around what happened when we got spark back then a few days later nothing... any help would be greatly appreciated 

Share this post


Link to post
Share on other sites


Have you checked all of your grounds ? I would look for loose, dirty, or even cracked wires that could have corrosion inside.

Edited by Oldymf

Share this post


Link to post
Share on other sites

I will check through them, just real strange that we had spark, shut it off and then a few days later no spark again...

Share this post


Link to post
Share on other sites

It could be a loose or breaking ground. They can be like chasing a ghost. Just check them all. Look for dry rotted cashing.

Share this post


Link to post
Share on other sites

Maybe the spark plug boot is bad, its possible for it to be shorting out,more like an open .

Share this post


Link to post
Share on other sites


If I was plug boot you would see "lightning tracks" on the boot it's self. My suggestion other than grounds as suggested previously (best way to check would be ohm meter from grounds of the cdi, coil, and engine case to battery negative post) would be to trace wires to the stator and make sure that there is not anything rubbed through especially where it goes through the case. Also I have had solder on the stator contacts get hot and degrade eventually coming appart especially with cheap stators.

P.s. also check ground of engine case while trying to start if stator shorts internally it will sometimes give alternating ground/positive as engine turns

Share this post


Link to post
Share on other sites

Topic moved to Yamaha ATV Forum and added ATV info into topic title. 😁

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 Nick Gudex
      Hello I am new to this site and I havea problem. I have a 1987 big bear 4x4 that will not spark. I tested pick up coil per repair manual and I tested my new coil both ok. It puts out 9 volts at the coil but It is reversed polarity. So when I hook my meter up to it she shows -9 volts while cranking. When I put a test light  on it it flashes. Being an electric system this should tell me something but I don't know what its telling me. I have yet to meet one i could not fix but this old girl has me stumped. Any help would be awesome. Thanks to all.
      Nick
    • By Gary Mier
      1997 Yamaha 350 Warrior, should there be oil in the stator area? Have a no spark situation.
    • By Asen_77
      Hi All,
      My name is Asen and I am from Eastern Europe, Bulgaria. Riding a Yamaha Raptor 700R and this is my first Quad wanted for a vey long time :)

       
    • By jolio
      Just got a '98 Yamaha big bear 4x4 in working condition (so far). Looking forward for some good information on this site about how to keep it alive.
    • By David Goff
      So i have an old yamaha bear tracker that was given to me from an old farmer I know. I decided to refurbished it and fix all the quick fixes on it. I am pretty sure that it is either a 1999 or 2000 based upon the original wiring harness. Little did i know when I bought a new to me wiring harness from ebay that it was from a 2003 or 2004. My question to everyone is do I need to have all the stop switch assemblies hooked up? I think there are three on the 03/04 models and only one on the 1999 to 2000. Any help I can get for this would be great. I haven't run it yet due to the motor and crankcase is in two totes. 


  • Similar Tagged Content

    • By Gary Mier
      1997 Yamaha 350 Warrior, should there be oil in the stator area? Have a no spark situation.
    • By Brent Mason
      IMG_4272.MOV Originally had my griz600 stop running and then wouldn’t start ! After testing all coils , valve lash , compression (115psi) and all tested ok I bought a used cdi . After cdi install it still wouldn’t start (no spark) ! So even though the stator , pulse/trigger and charge coils check within good range I decided to switch the stator etc ! It started but It is very unresponsive on throttle and acts like it is running in 2 Different spark timing ! With slight throttle it will take off good but instantly go into a very different running mode with no power like timing very retarded but it will switch back to running good for short period then bad again !  Since I replaced the stator and it started I then decided to install the cdi I replaced and it did the same thing ! Also I noticed the Used cdi I Took off had a capacitor that had swelled and extruded from the back of the cdi . I had always heard and I believed that when these CDIs go bad they machine will quit and will not run . Is that true ? I also checked the cam/valve timing and its ok ! Checked with timing light and it does fluctuate on idle ! I am thinking I have 2 bad CDIs . I also switched the trigger Coil wires and would not start then . Man , this thing ran good before and I am confused ! Video below may help !
      IMG_4272.MOV
    • By Josh Boyd
      I have replaced the cdi box,spark plug,coil and stator but still no spark.
    • By Brenden
      Hi, I just bought a used 1990 warrior and the rear is sagging low like it has a lowering kit but I’m not sure, does anyone know what it could be?



    • By Aj Hurtibise
      I have a 2000 Honda trx90 I got from a buddy for free he said it needed a carb so I put his old carb back on it to try to get something out of it and it does not have any Spark. I already replaced the ignition coil I don't know much about four wheelers but I am a technician so I do know my way around a motor any electrical help would be wonderful or specs I don't have the best digital multimeter either.
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...