I recently got a 1996 LT250-T. It was not running when I bought it. It starts up imediately and dies just as quick. IT has good spark, clean air filter, new clean fuel. I disassembled and cleaned the carb twice. When I leave fuel petcock in the prime position, the quad will usually start and run at a high rpm for a few seconds, even revs with the throttle, but dies after a few seconds.

I could not suck air through the original petcock in the on or reserve position, only the prime position. After reading the petcock was the trouble for a few other folks with similar symptoms, I am now out $70 on a new petcock, but still have the same problem. I also can not suck air through the new petcock either, except in the prime position.

The carb was most likely disassembled before I got it. I have no idea how far off any other adjustments might be.

The bowl on the bottom of the carb did not seem to have much fuel in it when I took it off a few times. I bent the tabs so that the bowl seems to be about 1/2 full of fuel.

I ran a search of carb issues, but other than advice like cleaning the carb again, any good ideas on what to do.

Thanks in advance for the help.

 

take this thread and go over to the bomb thread I was going to say that the choke was on but it seems like you have a few more probs then that

 

also welcome to the forums the bomb guys would be glad to help they should have a solution for you