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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.
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By Prepper
Hello All...
Just bought a 2014 Massimo 500 UTV. It;s not running at the moment, but hopefully will soon. I need a seat for it also (passenger side, if it makes any difference.) It is a crank-but no start situation. Just now starting to read the boards for solutions. Apparently these models are well known for this issue. If anyone has any suggestions, please feel free to chime in, it would be greatly appreciated.
Thanks
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By SayHiToRambo
08 trooper 1100
Bit of background. First the machine would take for ever to start. So I adjusted the valve shims into spec and made sure the timing is correct. Starts perfectly now.
now it fluctuates on idle. Bogs down, Revs up, repeat. I noticed the fuel pressure drops from 60psi to 20psi while that happens. It also bogs down at the lower end of each gear, higher rpm seems to be fine. Seems to struggle under load. In neutral it revs up perfectly.
brand new fuel pump, fuel filter, gas. I noticed on the fuel pressure regulator there’s that vacuum nipple, it’s not attached to anything and I’m not sure where it would go. Possibly the problem?
Another issue is the tip off the end of the exhaust is broken off, sensor is still attached and connected. Could that cause these issues?
my next plan was to look into the pressure regulator and voltage to fuel pump while driving. Is there anything I’m missing or any ideas you guys have?
thanks!
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By Tarak1980
I have a Coleman HS400UTV-5 got it manly for hunting and spending time with the grandkids
The one problem I am trying to avoid. My son borrowed it last summer and said it ran hot so he added water to it . I do not know how much he put in so I would like to drain most of it and add new coolant to protect it this winter. I can find no drain cock or any way of draining it besides loosening a hose. Any suggestions ????
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By Rainman
I want to put a charger/maintainer for my Coleman UT400 for the winter and need to know if it uses a 6v or 12v battery.
One search online showed a 6v, but another stated 12v..
I can look at the battery, but after taking the seat out you cannot see the top of the battery without also removing the top plate under the seat and at 8 degrees outside, I'd rather not be out there too long.
Can anyone verify what volt (6 or 12) the batter is?
Thanks in advance ...
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