Linhai 400 UTV Bighorn sputters and stalls - ATVConnection.com ATV Enthusiast Community



Reply
 
Thread Tools Search this Thread
  #1  
Old 10-29-2016, 08:39 PM
Weekend Warrior
Thread Starter
 
Join Date: Oct 2016
Posts: 3
Default Linhai 400 UTV Bighorn sputters and stalls

When the UTV is cold, it will start right up. No choke needed. It will rev, but does have a little sputter. Sometimes it will die as soon as I put it in gear, other times I will drive it for about 2-3 mins, then it dies and might restart. If it does restart, it runs terrible. Most of the time it is dead for about 30 mins. Then it will restart and repeat symptoms.
Reply With Quote
  #2  
Old 10-29-2016, 08:39 PM
Weekend Warrior
Thread Starter
 
Join Date: Oct 2016
Posts: 3
Default

When the UTV is cold, it will start right up. No choke needed. It will rev, but does have a little sputter. Sometimes it will die as soon as I put it in gear, other times I will drive it for about 2-3 mins, then it dies and might restart. If it does restart, it runs terrible. Most of the time it is dead for about 30 mins. Then it will restart and repeat symptoms.
Reply With Quote
  #3  
Old 10-30-2016, 09:13 AM
Weekend Warrior
Thread Starter
 
Join Date: Oct 2016
Posts: 3
Default

Those are my current issues. I have been working on this for weeks. Here's a list of repairs I've done.

1 Replace spark Plug with NGK.
2 Cleaned/rebuilt carb
3 Replaced CDI
4 Cleaned/rebuilt carb
5 Replaced coil
6 Cleaned/rebuilt carb

The reason I have cleaned the carb so many times is I keep telling myself it has to be a fuel issue and doubting the my clean, because when the UTV stalls, I will pull the plug and check spark. It has spark! I went very in depth on my last cleaning. I have full faith the carb is cleaned and A/F valve is very close to where it needs to be.

I'm stumped. The spark plug definately does not show the motor to be running rich, possibly a little lean. Just to test how long the UTV would run, I set the idle screw to about 3000. The UTV ran for 2-3 mins, then fell on its face.

I haven't touched the stator or pickup coil.

Any and all help is very appreciated!!
Reply With Quote
  #4  
Old 11-01-2016, 05:07 PM
old polaris tech's Avatar
Polaris ATV Expert
Retired and loving it!
 
Join Date: Jun 2008
Location: North Texas
Posts: 20,999
Default

Have you checked fuel flow to the carb plus is the tank vent open and any carb atmospheric vent open? You can try the old timing light trick if it runs long enough to test. Hook the light up and when the engine runs crappy if the light flashes,flickers in unison with the engine bog or miss,then that usually a sign it's an ignition problem. If the light stays constant,no flickering then the problem could be other than ignition.
Reply With Quote
Reply



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -5. The time now is 07:05 AM.


 
  • Ask a Question
    Get answers from community experts
What's your question?
Send