Quantcast
Jump to content


Massimo MSU 500 Extremely Loud

rtate1050

By rtate1050
in Massimo UTV SxS Forum

 Share

Recommended Posts

rtate1050 Explorer

rtate1050

Posted
Posted

Hi to all . My name is  Rich . I've recently purchased a MSU 500  from Massimo in Texas .  So far I'm impressed with the overall quality of the machine . My only real issue so far is that this thing is extremely loud . You can't even carry on a conversation with a passenger without yelling which is annoying. My first plan is to add some Dynamat to the underside of the engine cover and the seats.  I would appreciate it if anyone has this problem and any solutions . Is there anything in the aftermarket for the exhaust system ?

Other than that I'm pretty happy with it so far.

Rich

  • Alex changed the title to Massimo MSU 500 Extremely Loud
Joe Breaux Mentor

Joe Breaux

Posted
Posted

check the exhaust pipe right out of the head.. Prone to cracking  and breaking off . ANOTHER factory defect from Massimo Poor Quality .. I implore you to bypass the fan switch and run it 100%  when key is on .. MSUs have massive overheating issues that   blow head gaskets and warp or crack heads.. And Massimo WILL NOT WARRANTY IT 

  • Thanks 1
rtate1050 Explorer

rtate1050

Posted
  • Author
Posted

I read that on another post and I checked it and it seems to be OK. Thanks for the input.

It doesn't seem to be as loud standing at the back with the engine reving. I think that sound deadening in the interior will help a lot , but we'll see .

rtate1050 Explorer

rtate1050

Posted
  • Author
Posted

Good to know that there is some already there . 

I ran into another problem  though. I went to pull the seats and console to check the insulation and check the oil and cannot CANNOT get the drivers seat to come out. No matter how hard I pull on the lever it will not release ! There has to be something wrong underneath with the release . The only way that I can see to get to it is to remove the panel in front of the seat and hopefully get to the latch from there.  Can't really do anything until I solve that problem. 

Anyone have any suggestions ??  I've tried spraying lube underneath but no help.

mseawell Apprentice

mseawell

Posted
Posted

I don't have the stock/original seats or seat bases in mine.  I do recall one side being harder to get out than the other but I was always able to get them out.  Sorry, that I cannot help you on that one...

rtate1050 Explorer

rtate1050

Posted
  • Author
Posted

Yesterday I was determined to get that seat out. After a lot of rocking and shaking , it finally came free . Turns out that the bolt that the seat locks onto was slightly bent.

After careful and precise application (a couple of hard whacks ) of a finely calibrated adjustment tool ( ball peen hammer) the offending part moved into alignment. 

Problem sorted....

  • Haha 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

    • CapnWalleye
      2016 Hisun 500 runs rough no power
      By CapnWalleye
      Just picked up a Hisun 500 that had shift issues (corroded fan gear) which I fixed. It also didn't seem to be running smoothly then all of a sudden it got worse. It seems to miss on both idle and when pushing the gas pedal to the floor and doesn't seem to be running at full power. I've been working with a local person who is walking me through some steps, but I'd like some input from this group as well. What I've done:
      - drained the fuel tank and replaced it with 93 octane fuel and added heet to help with any water problems.
      - replaced the fuel injector.
      - disconnected the battery (several times) to allow the module to reset.
      - set the valve clearance, both intake and exhaust, within specs ... intake was tight but exhaust seemed fine.
      - replaced the battery.
      - replaced the O2 sensor.
      Nothing has helped. Not sure what the next steps are, but would appreciate any expertise that can be offered here.
       
    • Prepper
      2015 MSU-500 crank - no start
      By Prepper
      I'm working with a 2015 MSU-500.  Basic symptoms are it cranks well, but will not fire.  It has spark, and it has fuel spraying out of the injector (and spraying starting fluid into the throttle body and plug hole makes no difference).  It has compression.  I bought it not running, and no other information was available.  It has 775 miles on it and 127 hours.  It looks to be in very good shape.   Previous owner replaced fuel pump, ECU, coil, plug, and the fuse/relay box that mounts on the firewall, then gave up.
      My questions relate to cam/valve timing, considering the symptoms and diagnostics so far.  My thinking was the woodruff key sheared off and the crank spun, making it out of time.  My question is, by the pictures attached does anyone have an opinion as to the cam/valve timing being correct?  In the crankshaft picture you can see a timing mark visible.  In the camshaft picture I have arrows directed towards what I think are timing marks (which appear to be exactly 180 degrees from one another).  However, the long arrow in what appears to be bolt configuration in line with the piston/rod line.  Here is a puzzling note... in the position you see in the pictures... I have valve lash on both the intake and exhaust.  I think it's at TDC, given the visible crank timing mark and valve lash on both valves. 
      Any thoughts ?  Does this appear to be in proper valve time ?  Have I missed anything simple ?  Thanks in advance for your input.


    • CapnWalleye
      2016 Cub Cadet 500 runs rough
      By CapnWalleye
      Just picked up a Cub Cadet 500 that had shift issues (corroded fan gear) which I fixed. It also didn't seem to be running smoothly then all of a sudden it got worse. It seems to miss on both idle and when pushing the gas pedal to the floor and doesn't seem to be running at full power. I've been working with a local person who is walking me through some steps, but I'd like some input from this group as well. What I've done:
      - drained the fuel tank and replaced it with 93 octane fuel and added heet to help with any water problems.
      - replaced the fuel injector.
      - disconnected the battery (several times) to allow the module to reset.
      - set the valve clearance, both intake and exhaust, within specs ... intake was tight but exhaust seemed fine.
      - replaced the battery.
      - replaced the O2 sensor.
      Nothing has helped. Not sure what the next steps are, but would appreciate any expertise that can be offered here.
       
    • Joe Breaux
      2017 Massimo MSU500 Thermostat Malfunction
      By Joe Breaux
      Got a 2017 Massimo MSU500 UTV with thermostat malfunction.. hot light comes on in 4-5 minutes but radiator is ice cold... where exactly is it?  The hose neck on the head has nothing in it.  I was told it was down by oil drain plug.. only thing I see is water pump.. Is in inside pump housing?  Cant find any exploded diagrams that show it.. how to I remove it? any help would be appreciated
    • Bobbers
      Axis 500 parts
      By Bobbers
      My wife accidentally ran the Axis 500 into a fence and tore the front end up (broke her arm too). Just wondering where the best place to get front end parts? I know she busted the knuckle but haven’t jacked it up yet. Thanks guys for any help!

UTV FORUMS

MORE SECTIONS

FOLLOW US ON

GET IN TOUCH

  • Automotive Webmaster
×
×
  • Create New...