Quantcast
Jump to content


my massimo 400 buck started blowing white smoke out of the muffler

Jon Simmons

By Jon Simmons
in UTV General Discussion

 Share

Recommended Posts

Jon Simmons Rookie

Jon Simmons

Posted
Posted

My Massimo 400 buck started blowing white smoke out of the muffler. Anyone tell me what is creating that. I immediately parked it and afraid to crank it until I know what to fix. Please help if you know. Thanks 

kenfain Experienced

kenfain

Posted
Posted

T-boss 410 is correct, and a bad head gasket is probably the cause. White smoke is definitely coolant.

I'd try to verify, by using a leak down test first. It's a common, yet simple test. If you're unfamiliar, Tube can explain it.

The tool should be available from o'Reilly auto parts, loan a tool program, but call to verify availability. You buy the tool for extremely cheap, then return it when you're done, for a full refund. 

The test is cheap, and easy. Unfortunately the fix is neither. But it's certainly a doable project. 

  • Like 1
Joe Breaux Mentor

Joe Breaux

Posted
Posted

its the head gasket ..or a cracked head... been there ..mine had both ..there are videos o repair if you feel up to DIY  . parts available online. if not, find a mechanic willing to work on these. typically about $400-$500 for gasket 

  • Like 1

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.

×
 Share
Go to topic listing

  • Similar Topics

    • camojay
      Hisun Sector 450 (2021) - help diagnose rear diff issue (short video included)
      By camojay
      When we first heard the noise, we immediately stopped driving it...at first we thought it might be a linkage issue, but after further inspection looks like the sound/jolting is coming from the rear diff. Took a video below...
      Anyone know what is creating the diff to skip/jump like this? We drained the diff oil and didn't look terrible, no metal.
      Other info that may be useful:
      1400 miles on it
      Recently tightened the E brake
      P.s. never posted on this forum before, let me know if the video does not work
      20240817_133539_1.mp4    
    • Homeowner A
      Coleman 400 cut out when hot under load ideas?
      By Homeowner A
      Have a Coleman UTV 400 that cranks, runs, drives well until it gets warm and is put under load.  Light throttle or full throttle it doesn't bog, but it will cut out mid throttle if you move the pedal quicker than it seems to like for example when you're getting ready to go up a hill, but if you immediately floor it, it will do just fine and not cut out.  It's random if and when it's going to do it, but is consistent in that it happens only when hot/full operating temperature.  I've replaced the injector twice, same with the spark plug and tried different heat ranges (NGK 7,8 and 8 iridium), replaced the fuel pump, adjusted the valves, checked air filter which is like new, changed the oil, replaced the fuel filter.  No check engine light.  I don't have a code reader for this.  Initially I thought it might have a head or head gasket issue as when I got it, the oil was over full, very runny like water milky and it was smoking.  I've changed the oil since then twice to clear and clean everything out, and it seems to be good.  Coolant stays the same level and so does oil with no changes in consistency or need for adding more. Had I think 7-9 miles when I got it and now has about 77.  What should I try or consider next?  
    • Homeowner A
      UT 400 Injector Upgrade?
      By Homeowner A
      Is there a better performing higher volume injector than what they come with or what is the best replacement for the original?  
    • Homeowner A
      Coleman UT 400 Grease Points?
      By Homeowner A
      Is there a diagram of all of the grease zerks for a Coleman UT 400?  Mine squeaks like crazy and want to try and remedy it.  
    • CRV
      Need some help. Looking for some parts too
      By CRV
      Howdy new member here . My hobby's Rabbit dogs , gamefowl . I'm retired from my real job but I stay busy with the hounds and gamefowl . So to help around the farm I ran across an old 2007 CC Big Country 4x2 to haul feed , water , sprayer and my sorry a$$ .It is in pretty good shape , 781 hrs. good plastic , tires, ect. . But as anything outside and 18 years old it needs seats ! The thing I have found wrong mechically the Diff. Lock Acturtor is broken where it mounts to the bracket ( partly why Im here ) . Hoping someone here can help  ! Just my wish list but Id like to find a roll cage and a composit/plastic top for it Im thinking I'll need a donor to salvage these things from ( again partly why Im here ) .Is there another brand that uses this same actuator? If anyone reads this and has or knows of any of threse parts PLEASE HOLLER !! 
      Again Howdy brothers & sisters

UTV FORUMS

MORE SECTIONS

FOLLOW US ON

GET IN TOUCH

  • Automotive Webmaster
×
×
  • Create New...