Quantcast
Jump to content


2016 MSU500 with EFI problems

RES

By RES
in Massimo UTV SxS Forum

 Share

Recommended Posts

RES Newbie

RES

Posted
Posted

Hello All,

 I got myself into a project with an MSU500 that I got after a dealership had done a teardown on part of the engine. The previous owner had been riding and it died. i was told the dealer said that whatever was wrong couldn't be fixed, parts not available. A bolt for the Starter Clutch had loosened and vibrated out destroying the Stator and shearing the Woodruff key.  I have replaced all of that and put the motor back together. My problem now is I'm a Carb. guy never touched an EFI machine and I am getting no gas to the motor. I have confirmed that there is No gas getting to the cylinder, it fires with starting fluid. The fuel pump is working, i have pressure to the Injector and power to the Black and White lead on the Injector and the same on the Red and white lead to the ECM/ECU. I have been reading and trying to understand some of the troubleshooting steps that I've found. I also have done the test with the Injector pulled out and put in a container and tried, not even a drop of fuel comes out. I have also tried with a New Injector installed with the same results.

   I know this is not a Simple system but any input, or suggestions would be greatly appreciated. 

 

On a side note: This probably needs a new topic. but while i'm and this will sound foolish but. 

   Does anyone know where the Fuse Box is on a 2016 MSU500?? Believe me I've gone thru everything Under the hood. It is not in with or near the battery box as one manual says. Not one the firewall, inside out under the hood. I have spent hours working on both sides of the motor and Under it and I've not found it there. And after looking up a New Part for this I can't even find what are shown to be the correct Leads from the wiring harness to Plug into the unit.

I thank you All in advance for any suggestions or info that you might be able and willing to provide,

 

Robert

 

  • 1 year later...
Tay Newbie

Tay

Posted
Posted (edited)

Did you ever get your injector problem solved.  I'm not getting power to my  injector.  Do you have a wire shamanic that you could send me.

Edited by Tay
  • 1 month later...
klm Contributor

klm

Posted
Posted

maybe fuel pump  is working but just barely, maybe not enough pressure, do you show a firing voltage at the injector 

farmer99 Newbie

farmer99

Posted
Posted

Open up your hood! go in your fuse box and the fuse is bad mine did the same thing the fuse works opposite on a massimo it is like a reverse grounding system! You'll have power to your pump but don't have ground replace the fuse and it will work!

farmer99 Newbie

farmer99

Posted
Posted

Open up your hood go into the fuse box the fuse is blowing I had the same problem you'll have power to the pump but the fuse works in an opposite way like a reverse grounding system!

  • Like 1
flydaddy Newbie

flydaddy

Posted
Posted
21 hours ago, farmer99 said:

Open up your hood go into the fuse box the fuse is blowing I had the same problem you'll have power to the pump but the fuse works in an opposite way like a reverse grounding system!

This was exactly what I needed. A new fuse and a new spark plug and it fired right up. Thanks. 

farmer99 Newbie

farmer99

Posted
Posted
1 hour ago, flydaddy said:

This was exactly what I needed. A new fuse and a new spark plug and it fired right up. Thanks. 

Glade I could help! If the fuse keeps blowing replace the fuse box they go bad! Go on Amazon there cheaper

22 hours ago, farmer99 said:

Open up your hood go into the fuse box the fuse is blowing I had the same problem you'll have power to the pump but the fuse works in an opposite way like a reverse grounding system!

 

flydaddy Newbie

flydaddy

Posted
Posted
1 minute ago, farmer99 said:

Glade I could help! If the fuse keeps blowing replace the fuse box they go bad! Go on Amazon there cheaper

 

Good to know. Thank you. 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Similar Topics

    • Howard Elmore
      Coleman 550 trail riding
      By Howard Elmore
      I have owned mine for a couple years now but newer took off road.  How well does it do trail riding m?
    • Poppateets
      New owner with questions
      By Poppateets
      I just purchased a used 2023 Massimo warrior UTV SxS 1000mx with 600 miles on it. I didn't even get a full day of riding and the driver's side rear axle broke. I'm pretty sure it was already going bad because we would hear a noise once in a while. I'm wondering if anyone else has had problems with theirs. Also looking for places to buy accessories.
    • Jim Kessell
      EH65 spitting fuel from breather hose into air filter.
      By Jim Kessell
      2005 American Landmaster
      EH65 Subaru Robins
      spits fuel from breather hose into the air cleaner and then down into carb.  What’s causing this ??
    • TPlummer
      Axis x550 02 sensor on right after buying the UTV.
      By TPlummer
      We recently purchased the Axis x550. Fueled it with 93 fuel and drove one time around the farm and the 02 fault error appeared. Any ideas? 
    • Xov
      New AMP Pro Owner
      By Xov
      Just received delivery of a 2024 AMP Pro.  Thought I'd start a thread with my impressions as I use it and learn more.  There doesn't seem to be a whole lot of real-world usage information out there on this model.  Hope this will help others as they research.
      Intended Use Cases
      Fire mitigation / slash removal from a 5 acre forested and well-gamble-oaked property.  The previous owners thought as much about fire mitigation as I do about fashion: not much. Snow removal Stump pulling General hauling (rock, lumber, etc.) Weimaraner energy depletion.  Wasn't an original use case, but a nice added bonus.  Experiences So Far
      Wasn't impressed that two of the bumpers on the underside of the bed where it sits upon the frame were missing.  The metal on metal contact has damaged the powder coating and the frame.  I expect a little better QC.
      I've only put a few hours on it, so not a ton to report on usage.  It isn't quiet; it's silent.  I can't even detect an electric note from the motor. I removed (and subsequently replaced) the motor cover noticed that the motor is German and made by Schambuller.  The motor controller is Italian and made by Dana TM4.  Given the operating specs of both I found on the web, I suspect both are higher quality than the previous Navitas (which is supposed to be decent).  The motor is rated at 25 hp and 71.5 lb-ft of torque.  It feels very powerful.  All the torque is delivered instantly, if desired.
      The bed is huge and has an electric dump as standard.  Great feature but would like it to go up a bit more.  Probably not feasible from an engineering perspective, but I want and I need ;).
      Power steering is nice, but vague.  Probably common to many UTVs, but I am accustomed to more direct results from input.  Plan early and plan often.
      In our first full day of usage, we hauled about 1/2 as much slash as the entire rest of the year when I was doing it by hand cart.  I may get fatter, but I'll also get more done.  After a few days of usage, the battery meter has gone down by 1/10th. 
      Until next time...


UTV FORUMS

MORE SECTIONS

FOLLOW US ON

GET IN TOUCH

  • Automotive Webmaster
×
×
  • Create New...