I went riding with my brother the other day.His machine was running great. Then we both hit a little jump in the trail, we went about 100 feet and his started to stall like it was running out of gas. So I told him to switch to reserve he did but it still wouldnt start.We sat there for about five minutes and it started back up, he rode it back to my house,but it wasnt running very good.I pulled the fuel filter off it was fine, I then pulled the fuel pump off and its pumping fine .I can go out there now while its cold it will run great but after its warmed up it starts running crappy.Has anyone had any similar problems or anything I might try before it goes to the shop.

 

I would say maybe the coil,when they get hot will break down let it cool off and its ok maybe loose wire.CM

 

Did you put in a new spark plug? May not be related to the jump at all. Whenever I'm faced with an engine not running right I reach for a new plug first. At a buck something you can't go wrong, shoot for simple things first.

 

The next thing to change is the air filter. Cold engines require a richer mixture which is what a dirty air filter will deliver.

 

Once the engine acts up: does choking it make any difference? If not, it could be the plug,loose or dirty connections under the "hood" good luck polcat

 

I think the problem is in the carb, my 95 Sportsman will stahl or bog down when getting air on the whoops on the trail and otherwise run great. I have been told to rebuild the carb because the float is sticking. I have the complete service manual,but have not looked it up yet.
Ingoldx1
95 Sportsman
99 Trail Blazer

 

For sure change the plug first then if you foul a plug again likely your carb is worn. I have worked on so many carbs on Polaris ATVs I can do with my eyes closed. Needle and needle jet and while your there a float valve will cure a lot of problems.

 

Make sure you check all the vent tubes from the carb. It is easy for one to rest against the exhaust and melt shut. One snip will fix the problem.

 

DOES 96 OVERHEAT WHEN RIDING? MY 96 500 DOES

 

No it has never heated up.My brother carried a big bull elk last year up out of the valley and it never got hot