2020 hisun 400 utv side by side

[shawn b]

my hisun died on me while driving it started losing power then stalled. it wants to start but wont . it didn't over heat. I replaced plug,fuel filter injector, and fuel pump.put code reader on it and says no codes. have any ideas possibly sensor? Any input on what it could be would be appreciated

[Pop Bob]

go back to the basics. check compression, check spark, remove injector and crank to see if fuel sprays. Sprays!, not drips or squirts like an old man.

I already suspect a plugged up injector. If so, you can try to clean it up, but they're not expensive. I would recommend also adding an inline filter.

Good luck. Keep us posted

Pop Bob

[Alien10]

Man, I agree with Pop Bob that it is likely the injector.  Some Hisuns were manufactured and sold without an in line fuel filter.  There have been several videos on line of folks suffering from the resulting clogged or malfunctioning injectors.   They simply do not like anything in the fuel they are spraying.    Adding an in line fuel filter is easy, and an absolute must. 

[shawn b]

i do have a new inline filter. and tried a new injector. i have ordered a more expensive injector to try that. Will let you know what happens when i get it.

[shawn b]

nope tried a more expensive injector and still wont start guess i will finally have to take it into a shop. Ran out of ideas. 

[shawn b]

found out from shop that my timing chain had jumped so i need a top end rebuild.

[Pop Bob]

Wow. That totally sucks. What would cause the chain to jump time? How many hours on it? What did the compression test show?

P B

[shawn b]

i dont know i was driving and it started losing power so i shut it off. then 10 min later started it went about 500 feet down road then it just died. the motor made no weird noises or anything like backfiring or clanking. The mechanic said it hit the valves.he said he tried resetting timing chain and while cranking it it jumped again.so waiting for parts to come in and get rebuilt at shop. the machine only has 300 hours on it.sucks i only put 30 miles on it after I bought it used

[Alien10]

Unless you know the former owner, there is no telling what kind of life it had in its 300 hours.   Maybe you have already gone over the machine but check for signs of rough use. Do zerks and joints appear to have been maintained, brake pads, hidden areas packed with mud?  I know its a UTV but there may be signs of it being "abused" as opposed to just being "used".

Sorry you are having such issues.  

[shawn b]

it was used on an acreage for fence line by older couple.but thats not saying they maintained it;