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.

bizzbone

2001 Honda Foreman 400 smoking and oil coming out of exhaust

Recommended Posts



It could be that there is too much oil in the motor, or you are leaking oil past the piston/rings or valve guides.

Share this post


Link to post
Share on other sites

If there is that much coming out, it's like DD said..there is too much getting into the combustion chamber. Have you changed your air filter recently? Just curious...make sure it's not clogged.

Share this post


Link to post
Share on other sites

What dd said.also check your dipstick for overfill. And check spark plug. If excessivly oily. Might be time for a valve and/or ring job. How many miles on your unit?

All factors

good luck and good riding

doonorth

Share this post


Link to post
Share on other sites

sounds as if you have bad piston and rings need to check compression on cyl. also look at spark plug and see if it is black and oily hopes this helps

Share this post


Link to post
Share on other sites


It could be that your mixture screw at the bottom of the carb is off a little

Share this post


Link to post
Share on other sites

just took one apart doing same thing looks like it need piston rings and a valve job take off the head and look at the valves for soft oil carbon on intake valve and see how slopy the piston is in the cylinder

Share this post


Link to post
Share on other sites

first thought,

1.check not over filled with oil.vacuum line could be sucking oil. if dirty drain and replace quick solution could go thicker eg 20w-50 bike oil

2. check filter

3. spark plug what color?

4. compression if on the low side ~120psi its rings or valve. if high could be sticky or broken oil ring( if they are sticky, try SEAFOAM, and or intake cleaner, warm upto temp and add little and rev a little and then add more until it stalls. let sit for 30min and run it until warm and exhaust should stop smoking.

5. take head off check valve guilds.

6. check rings and bore size and roundness

Share this post


Link to post
Share on other sites

Dead thread alert. This was one of those one time posters, thread was started over a year ago, he did check in last April, but has not posted since he started this thread.

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 paul d
      I have a '01 500 quad master , i rebuilt the carb last spring an it ran great til 2 weeks ago now when i start it up runs great for about 2 minutes then it stalls sputters an backfires an when its in gear it wont move , but at idle it runs fine , i took the carb off took it apart an everything looked ok , blew it with the air nozzle put it back together an it didn't help it, I'm going to order another rebuild kit, any feedback or ideas would be greatly appreciated , thank you
    • By JacobSlabach
      recently picked up some project bikes off CL for cheap.  got a honda fourtrax (the ancient 4x4 kind with the straight axle in the front as well as the rear and a back-up kick-start)  plastics are crap, but my goal is to get running like a champ and patch the plastics up and sell to one of my many friends that want a reliable 4x4 for dirt cheap and doesnt care what it looks like.
      so the former owner says it needs carb rebuilt, but its sat for 3+ years since so who knows.  things I see:  carb is missing (he gave me a box of parts along with the bike), engine turns over and feels good with kick-start, brakes need work, battery missing (That always puts me off, cause then I know most likely someone's been tampering with the electrical.
    • By mike costa
      Has any one tried using the Harbor Freight Winch mounting plate on a 2001 Kawasaki 300 4x4 Bayou? 
    • By [email protected]
      I just bought a 1983 Honda 250r and am new to the experience. I need quit a bit of work done. I brought to a mechanic and just for back breaks and start stop switch it's 960$. Can someone point me in the right direction. 
    • By Michael Taylor
      Not sure if this is the right place to ask this but I have. 2000 Honda Forman 450es that was my fathers. When he passed away I figured I’d put some work into it. It’s been setting a while but figured it would be a good project for me and my son  
      Just found out that the display speedometer has been discontinued and I’m having a hard time finding one on eBay  I was curious if anyone knew if any other year model would work on this bike ?
       
       
  • Similar Tagged Content

    • Guest
      By Guest
      Ok...I'm gettin' me juevos ready to do an oir filter clean....
      Went to my local harley/quad dealer and he had me purchase the No-Toil kit (Cleaner, Air Filter Oil, Rim Grease)
      What I've read is that the No-Toil cleaner will NOT clean
      other oils off air filters....just the No-Toil oil....
      So, I've also read that others have cleaned their air filters
      in the kitchen sink, used gasoline, or used flash solvent....
      Looking for advice as I've mentioned I'm very mechanically
      DECLINED!
      I'm going to wash the air box seal in the sink and give it a good dry....
      One more thing......No-Toil or Bel-Ray for filter oil?
      Thanks!
      -TD
    • By crazynordlander
      Hi All,
      Has anyone found engine oil in their air filter box. The must be little or no baffle between crankcase ventilation and that hose that attaches to the air filter box.
      I went to pick up my ATV today 60 miles away that they could not fix the jerky low speeds on and before I loaded it decided to check on this. Sure enough there was a good coating of oil with some pooling in the bottom of the air filter box. The air filter has oil on it too but is it a dry element or oiled element type. My guess from the color of it dry.
      I heard on a comment on my YT videos that there is a kit for this issue? Is this a CFMOTO fix?
      Thanks
      Kevin
    • By bradleyheathhays
      I'm going into my '11 Grizz 700 to adjust valve clearance for the first time and when I button everything back up I'll be replacing all the gaskets / o-rings. The 5 I'll be replacing include (from the top down) both valve cover gaskets, cylinder head cover gasket, and the 2 gaskets in the crankcase cover.
      Do I need to coat these gaskets with motor oil before putting them on like when replacing your oil filter?
    • By sloundez
      Does anyone out there know where I can get a functional pair of wheel cylinders for subject ATV? Any suggestions welcomed. Thanks
    • By toonces
      Have a 2011 Grizz 700 and for the diff oil the manual calls for SAE 80 API GL-4 hypoid gear oil. I'll be using Mobil 1 synthetic but as it comes in two different weights I'm not sure which one to get....either the 75W-90 or the 75W-140.
      The 75W-90 is listed as GL-5 and is recommended for use in 'high-performance vehicles like SUVs, vans and light duty trucks.' The 75W-140 weight is also GL-5 and is recommended for 'high-performance vehicles including sport utility vehicles, vans and light-duty trucks.'
  • Recently Browsing   0 members

    No registered users viewing this page.


×
×
  • Create New...