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.

Brian Haley

early 2000s trail boss 325 4 stroke fuel issue

Recommended Posts

I wanted to ask this question before I pull this thing apart and dig into the carb. Very seldom used for a couple years but took it out the other day and it ran like crap. Blows black smoke on throttle (unburnt fuel) and sound like a multi cylinder engine with a misfire. Won't rev very high on full throttle but seems to be smooth at about 1/3 or less throttle. Choke doesn't seem to do anything and thinking perhaps it's stuck closed. If I turn off the fuel and let it run for a minute It will rev like normal under full throttle until it stalls out from no fuel but as soon as I open the fuel line again it goes right back to running rich/flooding.

 

Any help or ideas would be great. Trying to avoid tearing it apart and rebuilding the carb but the only thing I can think is the choke is stuck cause with the fuel off it will rev just fin seemingly as it's emptying the float bowl.

Share this post


Link to post
Share on other sites


Most likely what you think it is. Usually the carburetor is the culprit here, take it off and clean it good.  If your not familiar with doing this you can go to YouTube and you will find a ton of videos to help you out. Also some fresh fuel and a new plug should fix it up. 

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Similar Forum Topics

    • 2008 Polaris Outlaw 90 CC electrical system question

      I recently bought a 2008 Polaris 90cc outlaw for my daughter it only needed a few things like a carburetor and a transmission shaft which I fixed with ease. The headlights on this vehicle are dim so I bought a aftermarket set of headlights also a  small winch does anyone know if the stator puts out enough voltage to run these extra accessories do they sell a stator that puts out higher amps? I would appreciate any help that you guys should give me

      By Tony Amato, in Polaris ATV Forum

      • 4 replies
      • 346 views
    • 2006 Kodiak 450 Carb

      I rebuilt my carb and I'm trying to figure out how to adjust it. I set the fuel/air at 2 1/4 turns off of set, it idles fine then starts having high RPM's. I shut it down then it starts and stalls only with choke on. Any advice, help would be appreciated. Thanks

      By DavidMe, in Yamaha ATV Forum

      • 0 replies
      • 56 views
    • 1994 Honda trx 300 some carb issues

      So I have a 1994 Honda trx300 and I still am having some carb issues. I cleaned the carb and installed a new carb kit. Starts great, idles great, but when in 3rd it seems to pulsate. Not steady power. Any ideas on the setting the setting for the carb? I put a new spark plug in and the old one did seem pretty dark and sooty. I checked the gap on new one and installed. Went for a ride and it didn't seem any different. Any suggestions would be great..

      By Scoopeddad, in Honda ATV Forum

        
      • 7 replies
      • 563 views
    • 1990 Yamaha Big Bear 350 - Throttle Cables

      Hi, (Big Bear 350 4x4 1990 +- year, I am still looking for the VIN). Quad starts and runs and has 2 cables coming out of the throttle cable assembly one goes to the carb the other is not connected. Where should the unconnected cable be connected to ??? I have a service manual but can only find talk of "Throttle valve cable" and "Piston valve cable" I cannot see where the "piston valve cable connects. Any help especially with pictures would be good.

      By quintain, in Yamaha ATV Forum

        
      • 14 replies
      • 5,854 views
    • 2001 Suzuki King Quad 300 Carb Jet Adjustment

      Does any one know the proper adjustments for all the jets in the carb., I just replaced all the jets and I'm getting a lot of backfire also it seems like it isn't getting fuel or bugs down while idling and or riding any help would be great. Thanks

      By Gator man, in Suzuki ATV Forum

        
      • 2 replies
      • 150 views
  • Recently Browsing   0 members

    No registered users viewing this page.


×