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Joyner UTV SxS Forum

This is for all of you Joyner Trooper, Commando, and Renegade UTV owners. Joyner UTV specific topics.


1,801 topics in this forum

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  1. Unique Fixes

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  2. Past Trooper Problem Areas

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  3. Joyner is alive and well 1 2 3

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  4. Shock Info! 1 2 3 4

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  5. Fuel Tanks & Mods 1 2 3 4

    • 107 replies
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  6. Power loss 1 2 3

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  7. Fuel Controller 1 2 3

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  8. Electrical Issues 1 2

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  9. 4 WHEEL DRIVE ACTUATOR 1 2

    • 35 replies
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  10. Back to shocks 1 2 3

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  11. R-2 high rev 1 2 3

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  12. Hayg Fuel Pump 1 2 3

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  13. How about a 1st annual Trooper Jamboree 1 2 3 4

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  14. Power Steering (Electric) 1 2 3

    • 67 replies
    • 22.2k views
  15. Rear Diff. blowup 1 2 3

    • 70 replies
    • 22.1k views


  • Latest Posts

    • Nurse, FUG GET about it. The eengine is shot. Sounds are hard to decipher but it sounds like a rod rattling around in there. All the time I kept telling you to check the oil, I ASS umed you understood not to overfill. When you overfill a small engine like that the internal parts act like an eggbeater. It hit me when you mentioned how black and dirty the oil looked. I've seen one run until the oil turned to a tar or pitch like substance and freeze up. Even tho you may have loosened it the engine is shot. CANNOT BE REPAIRED. Save your pennies and get a new engine.When you give up trying t hings you'll wish you had just replaced the engine in the first place. PS| For a quick check, remove thge spark plug from engine. Find a long skinny screwdriver or you can use a pencil if you take it easy. As you pull the crank slowly does the screwdriver go in and out `with the` piston. If it doesnt move the connecting rod is broken and not attached to the piston. (No that can't be fixed at this point.
    • Can y'all tell where the sound is coming from? It's deafening! Way louder than in the YT video... Some points that may help figure it out: - I only put about 30 cc of Marvel Mystery oil in the spark plug hole. MM oil was sitting on top of the cylinder head for 3 days. Nothing came out when we turned the motor over without the spark plug in. - The motor was real hard to turn a week ago, now turns with ease. Could there be something broke inside the motor? - I'm attaching a photo of the oil I used. Same the previous owner said he used. 1.4 quarts filled it up. Dip stick says its the right amount. But even after oil change... the oil on the dip stick is black and nasty. Could there be something broke inside the motor? - The bolt and washers holding in the clutch were a little loose. I used an impact wrench to tighten. Thought that might help the sound. But it made no difference. - Could the MM oil be causing a stronger Than normal explosion in the cylinder? Could it have blown the valve adjustment out of whack?
    • Well, if it's not one thing... it's another. We used marvel mystery oil up top and changed the oil. Now, the motor spins with ease!! But now there's an incredibly LOUD metal clanging sound that may or may not be coming from the clutch?? Here's a YT clip with the sound...  
    • I have a DesertCross 800 that doesn't want to stay in low, it pops out when I let off the gas. No problem with the other gears. What do I need to do?  Thanks.
    • Yes, and that was my confusion. The manual, from what I've seen, only states JASO-MA, but doesn't mention whether the oil should be synthetic or not. I contacted a few guys who made videos on the Coleman UT400 and one stated he uses "regular motorcycle oil". Another just said he uses only "regular oil" because he also heard synthetic can cause slippage, but didn't mention if that regular oil he uses was JASO-MA or not. The third guy I spoke to, who owns a repair shop stated the following: "As far as clutch slippage , you don't have to worry about that from the oil, being that these units come with CVT, no oil ever touches the clutch. And I don't see any reason full synthetic would harm this engine in any way. However that being said I do know that full synthetic oil in older Harley Davidsons have caused cams to spin inside the bearings creating a flat spot in the bearing. I do not see that happening to these units." So with that said, I'm guessing that as long as it is a JASO-MA rated oil, it doesn't matter?
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