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.

Michael P

Bayou 400 no spark issue

Recommended Posts

 Hi i have bayou 400 when i turn it over i get one little spark and that's it? New cdi ,switch, and a used regulator/retifier,new battery any suggestions would be greatly appreciated

Share this post


Link to post
Share on other sites


I've had 3 atv's in the shop with the "1 spark" problem.  2 of them were regulator/rectifier.  The other was a loose ground cable.  To check the ground, I take a pair of jumper cables and attach both clamps on one end to battery neg. and the clamps on the other end to the motor and frame.

  • Like 2

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 Daniel Gibson
      Working on a bayou 220 that has been ran extremely hard it's whole life. Literally had almost an inch thick dirt/oil covering the motor. Yeah that bad. Surprisingly it runs though. I cleaned the carb and tank multiple times. They're clean enough to eat off of. Readjusted valve lash and set timing. Was about 3 teeth off. It cranks good and runs good only problem is I have to cover the carb intake basically choking the hell out of it for it to start. The com choke works fine. It does this each time I start it regardless of temperature both ambient or motor. Wth? Compression is at 115psi I get 130s if I put a little oil in the piston chamber. Please help. Thanks 
    • By Dwight Williams
      Hey everyone, I've been scratching my head over this for most of the day.  I bought a couple of Bayou 220's, got them running (they've both been sitting), and started tweaking and fixing small things.  One of them is mostly done, the other had an aftermarket carb on it and I've been trying to sort that out.
       
      Anyway, while adjusting the carb it died a few times, I restarted and moved on until it died and wouldn't restart.  I figured maybe I'd flooded it or something - after further attempts I realized I had no spark.  Since I have two identical machines I have many parts at my disposal.  I've swapped the CDI, spark plug and coil with no luck.  I have good resistance readings from the stator and pick up (135 and 110 respectively),  I don't have a peak voltage meter but I measure around 53VAC on the stator when cranking.  I have a 4 wire stator, not an alternator like the newer ones.  Grounds look good, I've checked the kill switch by verifying that it and the ignition switch grounds the black/yellow wire to the CDI.  I can turn the engine slowly and see the pickup short the meter as well, seems normal right?  So far everything I've checked looks the same on both machines.  I've got the service manual and wiring diagrams.  Do these readings make any sense?  I'm obviously missing something but I'm stumped.  thanks!
    • By Dwight Williams
      Ok, so I bought a 2006 bayou 250 for 200 bucks, kid couldn't start it and had no idea why it wouldn't run, I pulled the rope and felt what I thought was valve to piston contact, he wanted 500 and I talked him down to 200 and brought it home.  Sure enough, timing was way far out, timing chain incredibly loose.  So for fun I re-tensioned the timing chain and re timed it, got about 120lbs of compression, pretty low.  I cannot get the chain very tight but the the tensioner seems to work fine, the chain guides don't look very worn.  Also, when I took the head off the valves don't look bent and the piston has no discernible marks on it.  Is this an interference engine?  I sure thought I felt some contact with the pull rope but maybe no permanent damage was done?  Anyway, I plan on doing a full top end job as well as timing chain tensioners and hopefully that'll cure it.  Is there any reason other than chain stretch (I measured it and it's ok) or guide wear that would cause the chain to be so loose?  Thanks!
       
    • By marek porowski
      Good morning everybody 
      I’ll be looking to get a cover for my Polaris sportsman touring that can be used while I take my atv to the lake for ice fishing. 
      min using an open flat trailer and 
      I want to protect it from the road salt 
      I know Polaris makes a nice cover but it’s kind of on the expensive side. I’ve seen some covers on amazon and eBay but was wondering if anybody has any suggestions 
      Thanks 
    • By Mike Johnson
      Does anyone know what the 3rd item is behind the battery on this ATV ? I know 1 is the,  solenoid1 is the CDI box, what is the 3rd.
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...