1985 honda 250 fourtrax problem

[BuddyScooby]

I have an old 1985 fourtrax 250 that has a bogging problem. It runs great at idle to 1/4 throttle. Anything after 1/4 throttle, it boggs down and if I hold it, it dies. If I run it like that for long, the plug will foul out and it wont start.

Any help would be great!

Thanks

[trikes4life]

Clean your carb and check gas lines sounds like you are not getting any gas, when you hit the trottle.

[BLAZERONE22]

Try running it without your gas cap, my vent clogged up and would cause that problem. you might also check the filter in the tank.

[Jason Hall]

Make sure you are getting enough air to the carb. If it fouls the plug, (turns plug black & soaks it with gas). Then pull the air box cover off & try it again, with a new plug. Make sure the choke is opening up, & the air filter is not plugged. If the plug isn't wet then clean the carb, especially the main jet. If it idle's good the pilot jet is ok.

[BuddyScooby]

I just rebuilt the carb. New gaskets & jets. Same size that were in there and that did nothing. Also have new fuel lines and filter. I will check the vent in the tank cap. Thanks

[TeamGeek6]

What jet sizes are in it? Sounds like the main is too large or needle too high. The stock carb setup for the '86 ATC250R is here:

http://www.3wheelerworldforums.com/s...026#post259026

See how your carbs jets compare to that list, should be ballpark.