Hello,

I have a 1994 Trail Boss, that ran great until today!

I get home from work, fire up the wheeler, which had sat outside in 5 degree weather and wind... but it has been that way for 2 days here.

Anyway, when I fire it up, it bogs down like crazy!

I took off airbox, and when I rev it, gas droplets spray back into airbox. I tried disconnecting rev limter, no help.

I changed plug, no help. I thought maybe choke plunger was not springing back, but I verified that it is.

Here is one more clue: when I turn the fuel petcock off, and it runs out of gas, then it revs fine until right before it starves for fuel.

Another item I finally got my kids to tell me: they ran it out of gas today, and filled it back up. But, they said it ran fine after that.

ANY ideas as to why it would have ran fine last night and be getting "too much" fuel today?

Thanks!

dgilfillen

 

OPT,

Seems like the only logical solution is a piece of crap in the rubber-tipped float needle valve? Or maybe it just could not handle the cold one more day!?

I guess the fuel level might be rising too high, causing all the fuel spray and too much fuel.

It would also explain why it runs fine when I turn the petcock off... at least until it totally runs outta fuel.

I will check the rubber tip on the needle, and let me know what else you think it might be!

Thanks!

dgilfillen

 

your float level could be slightly off but more than likely it got a peice of trash on the needle valve

 

yep i would clean the carb.....good luck

 

I would leave it alone until it warms up.Cold can mess lots of things up

 

Hey guys, I found this post:

http://forums.atvconnection.co...cleaning%20carburetor


where it talked about carb vent lines to the gas tank. Maybe one of these was plugged... as it seems as if these cannot vent, the carb cannot vent excess gas and it floods itself.

I will try these as well.

Thanks again for your continued responses.

dgilfillen

 

bump

 

Loosen the gas cap and see what happens

 

SOLVED!

I disassembled the carb, and found the main jet lying in the bottom of the bowl!

Thanks for everyone's help!

dgilfillen