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.

Guillaume Cliche

1987 Suzuki lt250 4wd Erratic Idle

Recommended Posts

I have an erratic iddle problem i cheked all the air leaks i rebuild and cleaned the carb but it wont run straight it runs good but then slow and some times it stalls and its the second time the float implode 

D8FD3DFA-3835-43B7-B0D3-8E85BD3152B7.jpeg

902DD2D1-7B3E-4014-AD74-41CCFDD4BC36.jpeg

Share this post


Link to post
Share on other sites

Welcome to Quadcrazy @Guillaume Cliche That some implosion damage.  Have you had any backfires ? That reminds me of an old bike I had that the timing was off a bit and the valves were out of spec also.   The engine backfired and and did the same thing to my floats. I would start there and see if the timing is off. That would also cause an erratic idle. 

 

Share this post


Link to post
Share on other sites

I didn't mention it but i also rebuild the head at the machine shop with new valves set the timing correctly change the cam chain and put a new gasket kit for the top end and intake gasket. Is a bad fuel pump can cause that or a bad vacuum hose ?

Share this post


Link to post
Share on other sites

Sounds like you did the right job! The only thing I could think of was the timing unless your onto something with the fuel pump.   But the floats imploded to me equal a huge suctioning condition which could be the result of a poor fuel condition I would guess as if the engine is starving for gas.

But have you heard any backfire or as if the engine farted? Lol bad choice of words but best way to describe it!  Like it kicked back in the opposite direction ?

Share this post


Link to post
Share on other sites

Yes it looks like the engine is starving your not the first to tell me that and for the backfires the first time i changed the float i remember seeing one you think that it causes the float implode ? Well i think the next step would be the fuel pump or inspecting the vacuum hose

Share this post


Link to post
Share on other sites

Agreed. Def look at the backfire thing.  As far as fuel pump definitely check the pressure as well as flow. Try to use a small gas  tank and hose and gravity feed it to see how it runs maybe ? 

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 Tagged Content

  • Similar Topics

    • By BuckBilly
      Good morning to all !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
      Let's see if we can make this a daily event.
    • By edb6969
      View File 1999-Later Honda TRX400EX Carb/Cable Removal
      1999 - Later Honda TRX400EX Carb/Cable Removal Supplement
      Submitter edb6969 Submitted 11/02/2020 Category Honda ATV  
    • By Ed Morris
      I have a 2001 Quadmaster. Bought it from the original Owner. Its in Excellent condition for a 2001. The guy said there was a carb problem when I bought it. It seems like it is not getting fuel. I took off the tank, cleaned it, replaced the gas with fresh Gas, Installed a New Gas Valve. Then rebuilt the carb with a Carb Kit. Started it up and same damn thing, seems like its starving for gas. It will also backfire out the exhaust while trying to accelerate. Now the weird part. I started it the other day and it ran great. We went for a ride and it ran as if nothing was wrong with it. Started it the next day and back to running crappy again. I was like WTF !!! ... Anyone have any ideas of what the problem could be?
    • By erk mann
      What is the trick to remove the carburetor  on a 1987 moto4 350? 

    • By Brent Mason
      I have been trying to get my Griz600 running right for 3 weeks ! Grandsons used it and it quit running , no spark ! New stator etc and started but ran terrible ! Found a burnt capacitor on cdi . Installed used cdi and burnt it also but ran same as other cdi . Came to conclusion wire harness had short so stripped it and found some bad spots fixed and another cdi ran terrible again ! Bought another harness and same rough running ! Checked spark timing with light (put tdc mark on case and on pull start hub) and when it starts timing right on but will jump 25+° retard ! When timing is on tdc marks it has no power ! The stator is new but I am wondering if the pickup coil is triggering incorrectly ? Also had top end apart when I first started having trouble and although rings were good I installed new rings . Also new timing chain and check the valves , they were good also . It kind of seems to boil down to the last stator I installed new ? I have done trouble shooting on quite a few cars , trucks , dirt bikes and ATVs but this is frustrating me ! Just wondering if anyone has any ideas ? Carb was new last yr and I checked it ! I
      IMG_4379.MOV
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...