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.

Karatemaddog

2000 Yamaha Warrior YMF350X - Backfire?

Recommended Posts

Im working on a Friends 2000 YMF350X Warrior. She told me that the last time she rode it she had to jump start it. After that it wouldnt start. Dead battery obviously. Now the last time she rode it, She jumped it and rode it less than a mile up the road to a friends and it ran perfect. Smooth Idle the whole nine yards. When she got to her friends the battery took a complete crap so it sat overnight. The next day however, When the battery was replaced all it did was crank and crank and crank then Backfire, LOUD, Then crank some more. I checked out the whole ignition system. Replaced the plug and everythings fine there. All this happened about a month ago and somewhere either before this event took place or after... Idk. Someone had filled the oil little over 2 and a half times the amount. This motor took about 1 and 1/3 qt to read right on the dipstick and i drained almost 3 qts out. Any Suggestions from here? (Thought bad Gas possibly but new gas acts the same)

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 amharrison24
      i have a 91 moto 4 100. has electric start only. for as long as i could remember we have always pushed start it. after riding for while you shut it off. you are able to hit the start button and it will start right up. anyone know where i should start with fixing this issue? im fixing it up for my niece. thank you in advance.
    • By Steven Urban
      First time using this forum.  Owned a Kawasaki dirt bike once, had no issues.  But I picked up this 4 wheeler at an auction.  They stated it ran, but only needed a battery.  Well I do not believe that was all true.

      Some pictures are attached.  Not sure why, but the whole air filter stuff was removed.  They had some small thing inserted as a make shift air filter.

      I purchased a battery to try this all out.  Waiting to return it and get the proper size, as it was too big for the battery box.  But here is my issue I had while the battery was connected.

      1 - The lights on the steering column did not come on.  Not sure if they work or not.

      2 - The starter solenoid seems to be bad.  I have a new one on order. 

      3 - In the pick, there is another rusted part.  Not sure what that part is or what it is used for.

      4 - What is the 12v rectifier?  square bodied part.

      So when I hooked the battery up.  Pushing the start button did nothing.  Pulling the cord to try and pull start, it turned, but would never fire.  I have put in a new spark plug as well, it looked worn out.  With electric start, I crossed over the posts on the start solenoid, it turned over, but would never fire and start.

      I have read a few other threads and it stated something about needed the neutral light on.  SOmething about a kill switch.

      Any help would be appreciated.



    • By Josh Boyd
      I have replaced the cdi box,spark plug,coil and stator but still no spark.
    • By Maxx
      Hello Guys!
      Dumb question. How much oil registers on the oil level gauge while running? The oil level reads correct when off, but while running I can only see just a little bit in the oil level gauge. Makes wonder if the oil isn't circulating well enough.
      Also, whats your preference in battery brands for ATV's (standard or AGM). We don't ride it all that often.
      Thanks in advance for any info.
  • Similar Tagged Content

    • By Connie Johnson Donald Hudson
      Smells like gas in the oil ... Also, recently replaced belt, new BT does not have grooves on both sides, does that pose a problem?  Also just bought and replaced new carburetor, never has it idled better, but give it gas and it backfires very loudly!
    • By Christopher Williams
      Hello all, 
      i just rebuilt the top end of a 99 Bear Tracker 250 and it can’t get it to hit off of gasoline or starter fluid. Occasionally it will backfire. Right now I’m just trying to get it to fire off without the carburetor like I’ve done a thousand times before with other engines. Usually there is no response, but occasionally I get a backfire through the intake. ISeems like it’s out of time, but I don’t see how that could be possible. 
      Here’s what I know:
      1. compression 120psi
      2. all timing marks are lined up after numerous revolutions. 
      3. Strong spark. 
      4. Valves adjusted correctly. 
      Thanks in advance. 
    • By davidwestfall
      hey I'm dave westfall I'm new I just became an official member of this site a few minutes ago. Ive been crazy about quads and bikes since I was about 3 and ive always done my home work on them figuratively speaking. I would say for comparison to the common man that I am pretty knowledgeable about them. its been my passion about most of my life. I love talking about quads and bikes so if anyone out there would like to talk with me about mechanical subjects or about person experiences while riding or just shoot the breeze please feel free to chat with me. I'm looking forward to it.
    • By davidwestfall
      looking for direct shift shifting lever that properly fits my 2003 Yamaha warrior 350 and fits my foot the same as a stock 2003 Yamaha warrior 350 shifting lever fits my foot
    • By Dalton318warrior
      I have a 2000 yamaha warrior that wont start it has gas air spark etc ive replaced the the cdi box but i need help thanks
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...