not enough gas?

[fix er upper]

On my 85 250sx it will run great for a little while but then it doesnt get enough gas and slows down and sometimes dies anyone have any ideas to fix it i think the carb is not getting enough gas but i have no idea how to fix it?

[bones200x]

Make sure correct. Make sure petcock or fuel line is not restricted.
Are you sure it is losing fuel? I had one the other day the pulse generator would cut in and out when it got hot.

[bones200x]

Make sure correct. Make sure petcock or fuel line is not restricted.
Are you sure it is losing fuel? I had one the other day the pulse generator would cut in and out when it got hot.

[ATCnut]

Check gas cap vent too. When it starts to die, take the cap off.

[350x 250r]

i had a 85 sx that would do that. my gas tank had some rust in it and it would get in the carb. check your tank and if its good then just get a rebilde for the carb.or juest cleane it worked for me. i miss my old 250 sx reverse and it was the most reliable atc ive ever had and ive had almost every honda they ever made

[nstyle73]

My 250SX used to do this when I was a teenager. It would run fine until it got warm and then it would just die. You could take the gas cap off and let it sit for a minute and it would start right back up. I drilled some holes in the cap eventually and it fixed the problem. I think the vent just gets plugged and it vapor locks? I have a plastic tank now with a vented cap and it runs great.