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.

glen

87 lt 4wd Wont idle

Recommended Posts

Hi all,sure hope someone can help. Have a 87 lt 4 wd, started running rich. Flooding after shut down and wouldn't idle. Rebuilt carb,was nice and clean inside. Now it starts fine but will not idle,too lean.will rev fine. Drilled out the pilot jet just to see if that would change things and it will idle,but loads up too much. Also played with the float.Tried different pilot jets but after a few still no good. Have just about given up. Was trying to find one of the after market carbs that will work. My intake side is 30mm. Anyone have any ideas ???? By the way I own a PWC sales and service co and spend a lot of time doing carbs....never had one like this !!

Share this post


Link to post
Share on other sites


If its still flooding. Check the vacuum tube that operates the fuel pump for fuel in it. Might be a bad seal in the pump.

Share this post


Link to post
Share on other sites

Are you the original owner? Just wondering if a different model carb found its way in there. There are different jet components for these Mikuni carbs depending on ATV model. You could try raising the needle jet to enrich the mixture.

Share this post


Link to post
Share on other sites

No Im not,but looks like the rite carb. Did raise the float but no luck.The only thing that made any diff.was drilling out the pilot jet, will idle but loads up. Tried a few stock pilot jets a bit larger but no better....

Share this post


Link to post
Share on other sites


I was referring to raising the needle jet. I assume you have the type of carb with sliding barrel throttle. Comes out by unscrewing the top cap.

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 John conway
      My quad will start sometimes than just die well it’s running than won’t start again for a day , put in new battery same problem and it seems to drain battery any help would be great
    • By Rich1028
      Video from Leota Michigan on our Honda 400's
      5-30-2020
      Was A nice Afternoon.
       
       
    • By Aleksandr Boreesenko
      doesn't idle at times but sometimes when it does as soon as I touch the throttle it just shuts off, what could possibly be the problem? I thank you very much for any help, Thanks.
    • By cameron walton
      Hi Guys, I'm a newbie but pretty handy with a DMM (controls technician). I have been fighting a junker quad i picked up as a project bike, was assured it would run if I replaced the battery and cleaned the carb. I replaced the battery, rebuilt the carb with a OEM kit. FIxed all my switches and foul played circuitry from the last guy.... So I could get it to start long enough to test the quad, it seems okay from a trans/engine point. However I couldn't get the carb adjusted to idle to save my life with the idle air screw or the thumb screw on the card for the slide. I took it to a friend who is much more familiar with yamaha and quads and he double checked my carb rebuild all was fine, he adjusted the float to make the fuel not overfill which i missed.
      He pulled the air intake, got it started and couldn't get it to idle with or without air filter. We started looking at the spark plug (new) and he tested it with a spark plug clamp meter, tested good, pulled it and grounded and it had spark but he felt it was weak. I order a working used oem coil to try the easy things first. When I ohm out the coil on the quad with my Fluke i'm seeing .4 ohms on primary (ground lug to male connector) and 18K ohms on secondary (inside boot to ground lug). Seems like this forum is full of bear trackers so I'm hoping someone has some ideas to help me figure where to go with this. His thought was he know I ave fuel and he knows I have air, spark would be next. I have spark but possibly weak. Thanks
    • By Billy Aldrich
      2001 Honda foreman 450s manual shift. i can shift through the gears when the ATV is off, but when I turn it on, I can shift into first, but I cannot shift to second or even back to neutral. Same with reverse. I can get it into reverse but cannot shift out. If i turn it off it will shift back fine, any idea? I just bought this and fear I got screwed over. 
  • Similar Tagged Content

    • By BigRuss
      I have a Kawasaki  bayou 4WD that started squealing when giving it the gas from a stop. It almost sounds like a fan belt but the dealer replaced the belt about 30 hours ago, so I don't think it is that. As best as I can tell, it actually sounds like it is coming from the front end. Once I am running and moving at a speed, I don't hear the squealing anymore. My first thought was to put fan belt dressing on the fan belt, as a quick test for the problem. It makes the noise when hot or cold.
      Another problem, that started before the dealer changed the fan belt, is that you give the quad a little gas, and nothing, give it more, and nothing, give it more, and it lurches and takes off. The dealer said it needs a new clutch, which I don't buy. less than 400 hours and it needs a clutch? I would say it needs an adjustment. When the quad is cold, as in I just started it for the first time in hours, it does not lurch. It is just fine. It lurches only when it gets hot, as in when you can hear the fan once in a while to cool the oil.
      Any help or insights would be great.
       
      Russ
    • By bodatiouskid
      Have a 2002 Polaris Sportsman 700 that only has 34mi. on a carb & ring job.
      Cut the gas off today to drain carb.Now engine will not idle.If I open throttle will run,but let off & will cut off.Can screw idle in with no change.
      What happened? Why did this happen when fuel ran out?
      Please help me,my ATV is a daily driver.
      Please help!!
    • By cprservices
      Does anyone on here have a 2013 honda rancher? I have had several Honda ranchers in the past but I bought this 2013 rancher and it hits the rev limiter at half throttle. It is very annoying and I was wondering if anyone else's Rancher does this. If this is something from the factory or if I have a problem or not just trying to figure it out. Any help would be appreciated
    • By Chucky2015
      Was driving in mud playin around heard fan come on obce then didnt hear it come on anymore drove up to house and it stalled , now i can start it and starts real easy but once warm it dies even if i turn up idle , i was threw alot of mud and water , was wondering if the fan not coming on will trigger a sensor or something and cause this , starts great runs ok till its warm then dies or screws around when i keep it running ....
    • By Deerslayer
      My 1999 Sportsman 500 since new has had very few issues during the 16+ years I have owned it so it has been a fantastic machine!
      The problem showed up a number of months ago during hunting season and in essence once you start to ride it and then stop, it wants to continue to creep forward and makes it difficult to shift gears and there is a bit of grind when you do.
      Runs fantastic and seem to be no other problems with power to the wheels in 2WD/4WD so the only time you notice it is when you stop and especially if you need to change gears.
      I am looking for a starting point on where the problem could be.
      Appreciate any help!
      Craig
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...